FR541180A - Improvements to selective signal systems and corresponding selectively operating devices - Google Patents

Improvements to selective signal systems and corresponding selectively operating devices

Info

Publication number: FR541180A
Authority: FR; France
Prior art keywords: operating devices; selectively operating; signal systems; selective signal; corresponding selectively
Prior art date: 1916-05-18
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.)

1916-05-18

Filing date

1917-11-30

Publication date

1922-07-24

1917-11-30 Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF

1922-07-24 Application granted granted Critical

1922-07-24 Publication of FR541180A publication Critical patent/FR541180A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
- H04L15/24—Apparatus or circuits at the receiving end
- H04L15/26—Apparatus or circuits at the receiving end operating only on reception of predetermined code signals, e.g. distress signals, party-line call signals
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/08—Modifications for reducing interference; Modifications for reducing effects due to line faults ; Receiver end arrangements for detecting or overcoming line faults
- H04L25/085—Arrangements for reducing interference in line transmission systems, e.g. by differential transmission
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/18—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre
- H04Q5/22—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre the subordinate centre not permitting interconnection of subscribers connected thereto

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Power Engineering (AREA)
Relay Circuits (AREA)
Breakers (AREA)
Percussion Or Vibration Massage (AREA)
Knitting Machines (AREA)
Mobile Radio Communication Systems (AREA)

FR541180D 1916-05-18 1917-11-30 Improvements to selective signal systems and corresponding selectively operating devices Expired FR541180A (en)

Applications Claiming Priority (5)

Application Number	Priority Date	Filing Date	Title
US98384A US1343256A (en)	1916-05-18	1916-05-18	Selectively-operated circuit-controlling device
GB11765/17A GB117170A (en)	1916-05-18	1917-08-16	Improvements in Selective Signalling Systems and Selectively Operable Devices therefor.
DEB84998D DE371358C (en)	1916-05-18	1917-11-27	Selector for signal systems
FR541180T		1917-11-30
US405697A US1478005A (en)	1916-05-18	1920-08-24	Signaling system

Publications (1)

Publication Number	Publication Date
FR541180A true FR541180A (en)	1922-07-24

Family

ID=40467360

Family Applications (3)

Application Number	Title	Priority Date	Filing Date
FR541180D Expired FR541180A (en)	1916-05-18	1917-11-30	Improvements to selective signal systems and corresponding selectively operating devices
FR25557D Expired FR25557E (en)	1916-05-18	1921-06-28	Improvements to selective signal systems and corresponding selectively operating devices
FR25866D Expired FR25866E (en)	1916-05-18	1921-12-06	Improvements to selective signal systems, and corresponding selectively operating devices

Family Applications After (2)

Application Number	Title	Priority Date	Filing Date
FR25557D Expired FR25557E (en)	1916-05-18	1921-06-28	Improvements to selective signal systems and corresponding selectively operating devices
FR25866D Expired FR25866E (en)	1916-05-18	1921-12-06	Improvements to selective signal systems, and corresponding selectively operating devices

Country Status (4)

Country	Link
US (3)	US1343256A (en)
DE (2)	DE371358C (en)
FR (3)	FR541180A (en)
GB (1)	GB117170A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2576216A (en) *	1947-02-05	1951-11-27	Automatic Elect Lab	Selective calling system
US2572831A (en) *	1947-11-24	1951-10-30	Bell Telephone Labor Inc	Communication system
US2595614A (en) *	1949-04-08	1952-05-06	Stickel Harold Adolph	Selective signal receiving device
US3215781A (en) *	1962-07-30	1965-11-02	Webster Electric Co Inc	Intercommunication system

1916
- 1916-05-18 US US98384A patent/US1343256A/en not_active Expired - Lifetime
1917
- 1917-04-24 US US164247A patent/US1378943A/en not_active Expired - Lifetime
- 1917-08-16 GB GB11765/17A patent/GB117170A/en not_active Expired
- 1917-11-27 DE DEB84998D patent/DE371358C/en not_active Expired
- 1917-11-30 FR FR541180D patent/FR541180A/en not_active Expired
1920
- 1920-08-24 US US405697A patent/US1478005A/en not_active Expired - Lifetime
1921
- 1921-06-22 DE DEB100324D patent/DE445968C/en not_active Expired
- 1921-06-28 FR FR25557D patent/FR25557E/en not_active Expired
- 1921-12-06 FR FR25866D patent/FR25866E/en not_active Expired

Also Published As

Publication number	Publication date
US1478005A (en)	1923-12-18
DE445968C (en)	1927-06-22
FR25866E (en)	1923-05-22
US1343256A (en)	1920-06-15
DE371358C (en)	1923-03-14
US1378943A (en)	1921-05-24
FR25557E (en)	1923-04-20
GB117170A (en)	1918-07-11

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