WO2024175797A1 - Assemblage horloger et procédé de fabrication d'un assemblage horloger - Google Patents
Assemblage horloger et procédé de fabrication d'un assemblage horloger Download PDFInfo
- Publication number
- WO2024175797A1 WO2024175797A1 PCT/EP2024/054707 EP2024054707W WO2024175797A1 WO 2024175797 A1 WO2024175797 A1 WO 2024175797A1 EP 2024054707 W EP2024054707 W EP 2024054707W WO 2024175797 A1 WO2024175797 A1 WO 2024175797A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flexible component
- watch assembly
- component
- flexible
- rest
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B17/00—Mechanisms for stabilising frequency
- G04B17/04—Oscillators acting by spring tension
- G04B17/06—Oscillators with hairsprings, e.g. balance
- G04B17/066—Manufacture of the spiral spring
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B1/00—Driving mechanisms
- G04B1/10—Driving mechanisms with mainspring
- G04B1/14—Mainsprings; Bridles therefor
- G04B1/145—Composition and manufacture of the springs
Definitions
- TITLE Watch assembly and manufacturing process of a watch assembly
- the present invention relates generally to a watch component obtained by assembling at least two unitary parts together, and the invention relates more particularly to a watch component obtained by assembling at least two unitary parts which are completely flat or each having at least one part to be assembled which is flat.
- An aim of the present invention is to address the drawbacks of the prior art mentioned above and in particular, first of all, to propose a watch assembly comprising unitary parts which can be initially flat, the final assembly remaining simple, comprising a limited number of parts, and capable of being manufactured in a simple manner.
- An aim of the invention is also to propose a method of manufacturing such a watch assembly.
- a first aspect of the invention concerns a watch assembly comprising:
- the watch assembly comprises an attachment connection formed between the first flexible component and the second flexible component so as to deform the first flexible component and/or the second flexible component in a direction normal or substantially normal respectively to the first rest plane and/or to the second rest plane.
- the first flexible component and the second flexible component are planar components before their assembly, and once assembled at the attachment connection, at least one of the two components is deformed by the attachment connection in a direction normal to its rest plane. Consequently, once the assembly is carried out, at least one of the first flexible component and the second flexible component is elastically deformed in a direction normal to its rest plane to join the other of the first flexible component and the second flexible component.
- Such an implementation makes it possible to simplify the watch assembly, since no additional or separate component is necessary to couple the two flexible components together: the first flexible component and the second flexible component are directly assembled together thanks to the deformation normal to the rest plane of at least one of them.
- the watch assembly comprises an attachment connection causing a deformation of the first flexible component and/or the second flexible component outside the first rest plane and/or the second rest plane, respectively.
- the attachment connection causes a residual elastic deformation of the first flexible component and/or the second flexible component.
- the attachment connection is arranged to impose a deformation force (preferably permanent) leading to deformation of the first flexible component and/or the second flexible component, even with the watch assembly free or at rest, i.e. when the watch assembly is perfectly free, a permanent deformation force is still imposed on the first flexible component and/or the second flexible component due to the attachment connection.
- the attachment connection is arranged to impose a permanent tension (for example bending, shearing, twisting, traction or even compression) on the first flexible component and/or the second flexible component.
- the watch assembly comprises a support portion (formed for example on the first flexible component or on the second flexible component, or even another component) and the attachment connection is arranged to impose on the first flexible component and/or on the second flexible component a support on the support portion and/or a deformation or a residual and/or permanent displacement relative to the support portion of at least a part of the first flexible component and/or of the second flexible component, respectively.
- the attachment connection is a connection formed between the two flexible components themselves, it is an attachment connection internal to the watch assembly. It is not an attachment connection of one of the components of the watch assembly to any external frame or chassis that could impose a deformation within the watch assembly.
- the attachment connection may be a connection formed between the two flexible components after their own manufacture and/or that the attachment connection is formed directly between the two flexible components.
- the invention may relate to a watch assembly comprising:
- the watch assembly comprises an attachment connection formed between the first attachment element and the second attachment element and in which the first attachment element and/or the second attachment element has a longitudinal direction oriented at least partially in a stacking direction of the second flexible component on the first flexible component.
- the invention may relate to a watch assembly comprising:
- the watch assembly comprises an attachment connection formed between the first attachment element and/or the second attachment element in a stacking direction of the second flexible component on the first flexible component.
- the first flexible component in a rest state, is an unassembled component, i.e. still independent of the second component. In this unassembled state, the first flexible component defines a first rest plane.
- the second flexible component in a rest state, is an unassembled component, i.e. still independent of the first component. In this unassembled state, the second flexible component defines a second rest plane.
- the first flexible component once assembled, has at least one part which is no longer included in the first rest plane.
- at least a portion of the first flexible component, initially in the first rest plane is deformed and is no longer in the first rest plane once the attachment connection is formed between the first flexible component and the second flexible component.
- the second flexible component once assembled, has at least one portion that is no longer included in the second rest plane.
- at least one portion of the second flexible component initially in the second rest plane, is deformed and is no longer in the second rest plane once the attachment connection is formed between the first flexible component and the second flexible component.
- the attachment connection once formed, imposes an elastic deformation on the first flexible component and/or on the second flexible component (respectively outside the first rest plane and/or outside the second rest plane), and in particular, the attachment connection, once formed, imposes a residual or permanent elastic deformation on the first flexible component and/or on the second flexible component. Consequently, if the first flexible component and/or the second flexible component has an unsupported portion, this unsupported portion will be elastically and/or continuously deformed in the watch assembly. In other words, said unsupported portion of the first flexible component and/or of the second flexible component, once the watch assembly is formed, will be deformed and will no longer be contained in the first rest plane and/or in the second rest plane, respectively.
- the first flexible component has a first thickness and/or the second flexible component has a second thickness
- the attachment connection once formed, imposes a displacement on the first flexible component greater than or equal to 50%, preferably 100%, of the first thickness and/or a displacement on the second flexible component greater than or equal to 50%, preferably 100%, of the second thickness.
- the first flexible component and the second flexible component may be stacked, the first resting plane and the second resting plane being parallel.
- the first flexible component and the second flexible component are placed on top of each other, to provide a compact assembly, and at least one of the first flexible component and the second flexible component is deformed according to the stacking direction.
- the first resting plane and the second resting plane may be distinct, and/or arranged at a distance from each other.
- the first flexible component may comprise a first attachment element and the second flexible component may comprise a second attachment element, the attachment connection being able to be formed between the first attachment element and the second attachment element.
- Each attachment element may be formed by a free end, or a free strand of the respective flexible component.
- each attachment element may be formed by a portion that is not necessarily an extreme portion of the respective flexible component.
- at least one attachment element is provided on a portion that is mobile or displaceable or deformable in the direction normal or substantially normal to the rest plane of the flexible component in question.
- the attachment connection may be arranged at least partially between the first resting plane and the second resting plane.
- the attachment connection may be formed by fitting together complementary shapes or by welding between the first flexible component and the second flexible component, with or without filler material. It may be noted that the attachment connection may be reversible or removable, or on the contrary definitive or irreversible.
- the connection attachment may typically be formed from the first flexible component and the second flexible component or between the first flexible component and the second flexible component, i.e., the attachment connection is not a separate component for joining the first flexible component and the second flexible component.
- the watch assembly may comprise at least one intermediate element arranged to form a space between the first flexible component and the second flexible component.
- Such an intermediate element may be provided to isolate the adjacent flexible components, so as to avoid friction, interference or overlapping detrimental to proper operation of the watch assembly.
- the first flexible component and the second flexible component respectively comprise a first portion and a second portion facing each other, and the watch assembly comprises at least one intermediate element arranged between the first portion and the second portion facing each other. Without the intermediate element, the first portion and the second portion would contact each other.
- the intermediate element may be a spacer formed by a blade, or by a flange, or by a plate, or by a rim or a tab provided on at least one of the first flexible component and the second flexible component.
- the first flexible component and/or the second flexible component may be formed respectively according to a first rest plane or according to a second rest plane.
- the first flexible component and/or the second flexible component may be a planar component, typically with a planar upper face and a planar lower face.
- the first flexible component and/or the second flexible component may be a flexible component formed from silicon, for example from a silicon wafer, or nickel, for example electrodeposited, or nickel-phosphorus alloy, for example electrodeposited, or silicon carbide. These manufacturing or micro-manufacturing methods typically lead to the formation of planar flexible components.
- the first flexible component and/or the second flexible component comprises silicon or nickel or a nickel alloy such as nickel-phosphorus or silicon carbide.
- the first flexible component and/or the second flexible component may have a first end, a second end and an active elastic portion arranged between the first end and the second end.
- the active elastic portion may be designed to deform elastically so as to allow relative elastic displacement between the first end and the second end.
- the relative elastic displacement may be greater than 5°, or 10°, or 30°, or 90°, or 180°, or 280°, or 300°, or even greater than one or more complete turns.
- the relative elastic displacement may be greater than 5%, or 10%, or 30%, or 50% of the length of the active elastic portion.
- the first flexible component and/or the second flexible component may have a spiral structure.
- the first flexible component and/or the second flexible component may have or comprise an active part (designed to deform elastically) in a spiral.
- the attachment connection may be arranged at the periphery of the first flexible component and/or the second flexible component, and/or at one end of the first flexible component and/or one end of the second flexible component. It may be noted that the end mentioned above may be the end of the elastically deformable active length of the first flexible component and/or the second flexible component, it is not necessarily the physical end, or the tip of the flexible component considered.
- At least one of the first flexible component and the second flexible component may have a variation in thickness and/or stiffness in order to compensate for a stress caused by the deformation in the normal plane caused by the attachment connection.
- a recess or a local narrowing may be provided.
- the first flexible component and the second flexible component can be attached together to form a single helix component.
- the watch assembly can form an elastic member for storing energy in a timepiece or an elastic member for maintaining oscillations of an oscillator of a timepiece. It is typically possible to provide for forming a barrel spring to provide energy to a movement of a timepiece. Alternatively, it is possible to provide for forming an oscillator spring intended to be coupled to a balance wheel to produce or maintain oscillations in a timepiece. According to another alternative, it is possible to provide for forming a spring for a barrel driving an additional or complication mechanism such as a chime or an alarm, or for driving a specific mechanism such as a date or month or year or moon phase indication (instantaneous jump within a perpetual calendar, for example).
- the structure can also be provided to partially rotate a shaft or a rack, or to perform a linear movement.
- a second aspect of the invention relates to a method of manufacturing a watch assembly comprising the steps of:
- the above method comprises a step of deforming and/or displacing at least a portion of one of the first flexible component and the second flexible component, and this deformation and/or this displacement is at least partially permanent or definitive once the attachment connection has been formed. Consequently, an elastic stress may remain within the formed watch assembly.
- the step of providing the first flexible component may comprise at least one step of manufacturing a first component which is planar or has at least one planar main surface, and/or
- the step of providing the second flexible component may comprise at least one step of manufacturing a second component that is planar or has at least one planar main surface.
- the step of providing the first flexible component may comprise at least one step of micro-manufacturing and/or additive manufacturing, and/or subtractive manufacturing, and/or etching of a planar substrate, and/or
- the step of providing the second flexible component may comprise at least one step of micro-manufacturing and/or additive manufacturing, and/or subtractive manufacturing, and/or etching of a flat substrate.
- the manufacturing method may comprise a step of stacking the second flexible component on the first flexible component, before the step of deforming and/or moving at least a portion of one of the first flexible component and the second flexible component.
- the first flexible component may comprise a first attachment element
- the second flexible component may comprise a second attachment element
- the step of forming the attachment connection may comprise a step of aligning or abutting the first attachment element with the second attachment element
- FIG. 1 shows in top view an example of a first flexible component and a second flexible component to be assembled together
- FIG. 2 shows a side view of the first flexible component and the second flexible component of figure 1;
- FIG. 3 represents a side view of a watch assembly formed by the first flexible component and the second flexible component of figure 1 assembled together;
- FIG. 4 represents a side view of an alternative of the watch assembly of figure 3;
- FIG. 5 represents a top view of the watch assembly of figure 3 or figure 4;
- FIG. 6a represents a partial view of a zone VI of figure 5 to show a first alternative of an attachment connection between the first flexible component and the second flexible component
- FIG. 6b represents the partial view of zone VI of figure 5 to show a second alternative of the attachment connection between the first flexible component and the second flexible component
- FIG. 6c represents the partial view of zone VI of figure 5 to show a third alternative of the attachment connection between the first flexible component and the second flexible component;
- FIG. 6d represents the partial view of zone VI of figure 5 to show a fourth alternative of the attachment connection between the first flexible component and the second flexible component;
- FIG. 6e represents the partial view of zone VI of figure 5 to show a fifth alternative of the attachment connection between the first flexible component and the second flexible component.
- Figure 1 shows in top view an example of a first flexible component 20 and a second flexible component 30 to be assembled together.
- the first flexible component 20 and the second flexible component 30 are identical and each form a spiral spring comprising respectively a fixing element 21, 31, a free end 22, 32 and an active part 23, 33.
- the first flexible component 20 and the second flexible component 30 are planar components, that is to say that at least one of their upper or lower faces is planar.
- the first flexible component 20 and the second flexible component 30 are fully planar components, that is to say that the entirety of their upper and lower faces is planar.
- the first flexible component 20 defines a first rest plane P1
- the second flexible component 30 defines a second rest plane P2.
- the first flexible component 20 and the second flexible component 30 each have at their center an element fixing elements 21, 31 forming a ferrule and a stud, respectively, but it may be provided that only one of the first flexible component 20 and the second flexible component 30 has such a fixing element. It may also be envisaged not to provide a ferrule directly integrated into the first flexible component 20 or a stud integrated into the second flexible component 30. In other words, it may be provided that the first flexible component 20 and/or the second flexible component 30 simply has at the center a free end of the bar forming the active part 23 or 33.
- a first free end of the first flexible component 20 may be directly coupled to a balance staff (via a conventional ferrule for example), and/or a second free end of the second flexible component 30 may be directly coupled or studded to a balance bridge of a timepiece.
- the first flexible component 20 may comprise a fixing element 21 (to form a ferrule as in FIG. 1) to be coupled to a balance shaft, and the second flexible component 30 may have a fixing element 31 forming a stud element.
- the first flexible component 20 and the second flexible component 30 are parts resulting from micro-fabrication, and in particular the first flexible component 20 and the second flexible component 30 of FIG. 1 are parts manufactured by etching a silicon wafer according to, for example, deep reactive ion etching.
- the first flexible component 20 is turned over relative to the second flexible component 30, which is why its winding direction is opposite to that of the second flexible component 30.
- This arrangement makes it possible to show that if the first flexible component 20 turned over relative to the second flexible component 30 is stacked, then the ends 22 and 33 respectively of the first flexible component 20 and of the second flexible component 30 will be opposite each other.
- the end 22 of the first flexible component 20 is above the end 32 of the second flexible component 30, along the z axis (the direction normal to the rest planes P1 and P2).
- a watch assembly 10 is formed by stacking and coupling the first flexible component 20 and the second flexible component 30 at the end 22 of the first flexible component 20 and the end 32 of the second flexible component 30.
- an attachment connection is formed directly between the end 22 of the first flexible component 20 and the end 32 of the second flexible component 30, so that the first flexible component 20 and the second flexible component 30 bear on each other and are each deformed along the z axis to join at the attachment connection.
- provision may be made to take the end 22 of the first flexible component 20 and the end 32 of the second flexible component 30 between one or more clamps to align and attach them.
- each terminal end of the first flexible component 20 and of the second flexible component 30 has a longitudinal direction oriented along the horizontal axis x and along the vertical axis z.
- the end 22 of the first flexible component 20 and the end 32 of the second flexible component 30 are abutted and to do this, starting from initially flat components, the watch assembly has a portion (the attachment connection) sloping along the z axis and along the first and second rest planes P1 and P2, this sloping portion being constituted by an end portion of the first flexible component 20 and the second flexible component 30.
- the remainder of the watch assembly (the remainder of the first flexible component 20 and the remainder of the second flexible component 30) is contained in the first and second rest planes P1 and P2, or parallel to them. It may be noted that the unsupported portions of the first flexible component 20 and the second flexible component 30 are deformed along the z axis. It may also be noted that the attachment connection generates or imposes a permanent deformation force on the first flexible component 20 and the second flexible component 30.
- the imposed deformation is essentially a bending (and also a torsion to a certain extent at the point of support of the first flexible component 20 on the second flexible component 30), due to a bending-shear deformation force imposed by the attachment connection.
- Other geometries could involve torsion, compression or tension.
- all or part of the watch assembly namely the first flexible component 20 and the second flexible component 30, may be inclined and not parallel to the first and second rest planes P1 and P2.
- the attachment connection is formed by way of example by attaching the ends 22 and 32 end to end, with an intermediate layer 11 (or a filler material 11).
- the imposed deformation is essentially a bending due to a bending-shear deformation force.
- Other geometries could involve torsion, compression or traction.
- FIG. 1 shows the watch assembly of the figure in top view, where the fixing elements 21 and 31 are one above the other, as well as the active parts 23 and 33 which end at the ends 22 and 32 attached to each other.
- the watch assembly 10 obtained therefore comprises:
- Figure 6a shows the partial view VI of Figure 5 to show from above a first alternative of a fastening connection between the first flexible component 20 and the second flexible component 30, in which the fastening connection is formed by fastening the ends 22 and 32 end to end, without an intermediate layer or filler material.
- the fastening connection is formed by fastening the ends 22 and 32 end to end, without an intermediate layer or filler material.
- Figure 6b shows the partial view VI of Figure 5 to show from above (or also from the side) a second alternative of a fastening connection between the first flexible component 20 and the second flexible component 30, in which the fastening connection is formed by fastening the ends 22 and 32 end to end, with an intermediate layer 11 (or a filler material 11).
- an intermediate layer 11 or a filler material 11.
- a weld with filler material for metal parts eutectic bonding in particular if one of the parts is made of glass or silicon, bonding with a suitable glue, for any other type of part, a deposition of a layer in particular of oxide, or any other suitable technique.
- Figure 6c represents the partial view VI of Figure 5 to show from above (or also from the side) a third alternative of a fastening connection between the first flexible component 20 and the second flexible component 30, in which the fastening connection is formed by fastening the ends 22 and 32 end to end, with a fitting of counterforms.
- a dovetail has been shown, but other geometries can be envisaged.
- Ends 22 and 32 of a width greater than the width of the rest of the first flexible component and/or of the second flexible component 30 have also been shown, but the width of the ends can be identical or comparable to that of the rest of the components, or even less than that of the rest of the components. It is also possible to provide for leaving the assembly reversible or removable, or on the contrary to make it irreversible with gluing, welding, or locking by an additional part or locking by irreversible plastic deformation of material.
- Figure 6d shows the partial view VI of Figure 5 to show from above (or also from the side) a fourth alternative of a fastening connection between the first flexible component 20 and the second flexible component 30, in which the fastening connection is formed by partially covering the ends 22 and 32 with each other.
- the fastening connection is formed without an intermediate layer or filler material. It is possible to provide a welding without filler for metal parts, anodic bonding if one of the parts is made of glass...
- Figure 6e shows the partial view VI of Figure 5 to show from above (or also from the side) a fifth alternative of a fastening connection between the first flexible component 20 and the second flexible component 30, in which the fastening connection is formed by partially covering the ends 22 and 32 with each other.
- the fastening connection is formed with an intermediate layer 11 (or a filler material 11 ). It is possible to provide a weld with filler material for metal parts, a eutectic bonding if one of the parts is made of glass or silicon, a bonding with a suitable glue, for any type of part, etc.
- a watch assembly according to the present invention, and its manufacture, are capable of industrial application.
- the first flexible component 20 and the second flexible component 30 are made of silicon.
- any other material may be provided for manufacturing the first flexible component and the second flexible component, such as for example metal alloys, or nickel, or a nickel-phosphorus alloy, or silicon carbide.
- the first flexible component 20 and the second flexible component 30 are manufactured by etching from a wafer, but it may be provided to manufacture the first flexible component and/or the second flexible component by electrodeposition, by conventional forming of a metal wire (drawing, work hardening, rolling, etc.).
- the first flexible component 20 and the second flexible component 30 are fully planar components, i.e. their entire upper and lower faces are planar, but partially planar flexible components can be envisaged.
- first flexible component 20 and the second flexible component 30 are identical from one flexible component to another, but it is possible to provide structures that are simply similar from one flexible component to another, but which can also vary significantly from one flexible component to another, for example to optimize the torque profile as a function of the mechanical stress.
- the first flexible component 20 and the second flexible component 30 are spiral springs intended to be part of an oscillator of a timepiece, but it is possible to provide for forming a timepiece assembly for any other function: forming a barrel spring to store and restore energy, for example for a barrel used to drive a finishing train and maintain an oscillator, or for a barrel driving an additional or complication mechanism such as a chime or an alarm, or for driving a specific mechanism such as a date or month or year or moon phase indication (instantaneous jump within a perpetual calendar, for example).
- the timepiece assembly can also drive a shaft or rack in partial rotation, or perform a linear movement.
- a flexible active part such as, for example and in a non-limiting manner, flexible legs which can deform in bending, corrugated or accordion-shaped portions which bend or unfold elastically, or even beam portions which deform in bending.
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Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480013522.7A CN120752587A (zh) | 2023-02-24 | 2024-02-23 | 钟表组件及制造钟表组件的方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23158601.7 | 2023-02-24 | ||
| EP23158601 | 2023-02-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024175797A1 true WO2024175797A1 (fr) | 2024-08-29 |
Family
ID=85382840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/054707 Ceased WO2024175797A1 (fr) | 2023-02-24 | 2024-02-23 | Assemblage horloger et procédé de fabrication d'un assemblage horloger |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN120752587A (fr) |
| WO (1) | WO2024175797A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2141555A1 (fr) * | 2008-07-04 | 2010-01-06 | The Swatch Group Research and Development Ltd. | Résonateurs couplés pour pièce d'horlogerie |
| FR3048793A1 (fr) * | 2016-03-14 | 2017-09-15 | Lvmh Swiss Mft Sa | Micro mecanisme a reglage de position, mouvement horloger et piece d'horlogerie comprenant un tel mecanisme |
| WO2018146639A1 (fr) | 2017-02-13 | 2018-08-16 | Patek Philippe Sa Geneve | Organe moteur d'horlogerie |
| FR3094804A1 (fr) * | 2019-04-02 | 2020-10-09 | Vianney Halter | « Dispositif de couplage de deux oscillateurs d’horlogerie » |
-
2024
- 2024-02-23 CN CN202480013522.7A patent/CN120752587A/zh active Pending
- 2024-02-23 WO PCT/EP2024/054707 patent/WO2024175797A1/fr not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2141555A1 (fr) * | 2008-07-04 | 2010-01-06 | The Swatch Group Research and Development Ltd. | Résonateurs couplés pour pièce d'horlogerie |
| FR3048793A1 (fr) * | 2016-03-14 | 2017-09-15 | Lvmh Swiss Mft Sa | Micro mecanisme a reglage de position, mouvement horloger et piece d'horlogerie comprenant un tel mecanisme |
| WO2018146639A1 (fr) | 2017-02-13 | 2018-08-16 | Patek Philippe Sa Geneve | Organe moteur d'horlogerie |
| FR3094804A1 (fr) * | 2019-04-02 | 2020-10-09 | Vianney Halter | « Dispositif de couplage de deux oscillateurs d’horlogerie » |
Also Published As
| Publication number | Publication date |
|---|---|
| CN120752587A (zh) | 2025-10-03 |
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| Date | Code | Title | Description |
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