FR526529A - Improvements to automatic switch telephone systems - Google Patents

Improvements to automatic switch telephone systems

Info

Publication number: FR526529A
Authority: FR; France
Prior art keywords: automatic switch; telephone systems; switch telephone; systems; automatic
Prior art date: 1919-06-05
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.): Expired

Application number

Other languages

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Thales SA

Original Assignee

Le Materiel Telephonique Thomson CSF

Priority date (The priority date 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 date listed.)

1919-06-05

Filing date

1920-05-27

Publication date

1921-10-10

1919-06-05 Priority claimed from US301933A external-priority patent/US1543869A/en

1919-09-10 Priority claimed from US322943A external-priority patent/US1464109A/en

1920-05-27 Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF

1921-10-10 Application granted granted Critical

1921-10-10 Publication of FR526529A publication Critical patent/FR526529A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Interface Circuits In Exchanges (AREA)
Monitoring And Testing Of Exchanges (AREA)

FR526529D 1919-06-05 1920-05-27 Improvements to automatic switch telephone systems Expired FR526529A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US301933A US1543869A (en)	1919-06-05	1919-06-05	Telephone-exchange system
US322943A US1464109A (en)	1919-09-10	1919-09-10	Automatic telephone-exchange system

Publications (1)

Publication Number	Publication Date
FR526529A true FR526529A (en)	1921-10-10

Family

ID=26972670

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
FR23959D Expired FR23959E (en)	1919-06-05		Improvements to automatic switch telephone systems
FR526529D Expired FR526529A (en)	1919-06-05	1920-05-27	Improvements to automatic switch telephone systems
FR26877D Expired FR26877E (en)	1919-06-05	1922-09-19	Improvements to automatic switch telephone systems

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
FR23959D Expired FR23959E (en)	1919-06-05		Improvements to automatic switch telephone systems

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
FR26877D Expired FR26877E (en)	1919-06-05	1922-09-19	Improvements to automatic switch telephone systems

Country Status (4)

Country	Link
DE (2)	DE375226C (en)
FR (3)	FR526529A (en)
GB (2)	GB150727A (en)
NL (2)	NL11699C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1153282B (en) *	1955-05-05	1963-08-22	Mac Gregor & Co Naval Architec	Hatch locking device for ship hatches

0
- NL NL13408D patent/NL13408C/xx active
- NL NL11699D patent/NL11699C/xx active
- FR FR23959D patent/FR23959E/en not_active Expired
1920
- 1920-05-07 DE DEB93981D patent/DE375226C/en not_active Expired
- 1920-05-07 DE DE1920B0093980 patent/DE367091C/en not_active Expired
- 1920-05-11 GB GB1307120A patent/GB150727A/en not_active Expired
- 1920-05-11 GB GB1303920A patent/GB144264A/en not_active Expired
- 1920-05-27 FR FR526529D patent/FR526529A/en not_active Expired
1922
- 1922-09-19 FR FR26877D patent/FR26877E/en not_active Expired

Also Published As

Publication number	Publication date
GB144264A (en)	1920-11-18
NL13408C (en)
NL11699C (en)
DE367091C (en)	1923-01-16
FR23959E (en)	1922-01-26
FR26877E (en)	1924-03-19
GB150727A (en)	1920-10-14
DE375226C (en)	1923-05-08

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