FR832598A - Systèmes de communications électriques - Google Patents

Systèmes de communications électriques

Info

Publication number: FR832598A
Authority: FR; France
Prior art keywords: communications systems; electrical communications; electrical; systems; communications
Prior art date: 1937-01-25
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.)

1937-01-25

Filing date

1938-01-24

Publication date

1938-09-29

1938-01-24 Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF

1938-09-29 Application granted granted Critical

1938-09-29 Publication of FR832598A publication Critical patent/FR832598A/fr

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
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- 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)
Meter Arrangements (AREA)
Sub-Exchange Stations And Push- Button Telephones (AREA)
Structure Of Telephone Exchanges (AREA)
Mobile Radio Communication Systems (AREA)

FR832598D 1937-01-25 1938-01-24 Systèmes de communications électriques Expired FR832598A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB255237A GB489545A (en)	1937-01-25	1937-01-25	Improvements in or relating to electrical communication systems

Publications (1)

Publication Number	Publication Date
FR832598A true FR832598A (fr)	1938-09-29

Family

ID=9741597

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR832598D Expired FR832598A (fr)	1937-01-25	1938-01-24	Systèmes de communications électriques

Country Status (3)

Country	Link
DE (2)	DE944196C (fr)
FR (1)	FR832598A (fr)
GB (4)	GB489755A (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE476047A (fr) *	1939-08-16
BE447777A (fr) *	1941-11-03
BE467392A (fr) *	1944-05-05
US2594719A (en) *	1945-05-19	1952-04-29	Automatic Elect Lab	Voice-frequency telephone signaling system
FR956493A (fr) *	1946-04-15	1950-02-02
US2564378A (en) *	1946-05-06	1951-08-14	Punch Engineering Pty Ltd	Carrier system signaling circuits
BE483168A (fr) *	1946-06-15
US2495191A (en) *	1946-08-02	1950-01-17	Kellogg Switchboard & Supply	String-of-exchanges telephone system
GB654639A (en) *	1947-02-07	1951-06-27	Standard Telephones Cables Ltd	Improvements in or relating to electric signalling systems
US2579530A (en) *	1947-04-29	1951-12-25	Int Standard Electric Corp	Four-wire to two-wire connecting circuit
US2566009A (en) *	1947-12-12	1951-08-28	Automatic Elect Lab	Interexchange switching telephone system
GB656118A (en) *	1948-01-09	1951-08-15	Ericsson Telefon Ab L M	Improvements in or relating to automatic telephone systems
US2536825A (en) *	1948-03-26	1951-01-02	Stromberg Carlson Co	Multiplex telephony
US2693526A (en) *	1949-06-15	1954-11-02	Automatic Elect Lab	Single channel single frequency mobile radio telephone system
US2567115A (en) *	1949-08-20	1951-09-04	Automatic Elect Lab	Electronic director
GB852892A (en) *	1956-03-13	1960-11-02	Siemens Edison Swan Ltd	Improvements relating to telephone systems
NL267512A (fr) *	1960-07-25
CN113672424B (zh) *	2021-08-19	2024-06-14	支付宝(杭州)信息技术有限公司	修复异常任务的方法及装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1573991A (en) *	1924-12-17	1926-02-23	Western Electric Co	Signaling system

1937
- 1937-01-25 GB GB1880438A patent/GB489755A/en not_active Expired
- 1937-01-25 GB GB255237A patent/GB489545A/en not_active Expired
- 1937-01-25 GB GB1880338A patent/GB489609A/en not_active Expired
- 1937-10-19 GB GB1880238A patent/GB504237A/en not_active Expired
1938
- 1938-01-24 FR FR832598D patent/FR832598A/fr not_active Expired
- 1938-01-26 DE DEJ3355D patent/DE944196C/de not_active Expired
- 1938-01-26 DE DEI3267D patent/DE896667C/de not_active Expired

Also Published As

Publication number	Publication date
DE944196C (de)	1956-06-07
GB489609A (en)	1938-07-25
GB489755A (en)	1938-07-25
DE896667C (de)	1954-01-18
GB489545A (en)	1938-07-25
GB504237A (en)	1939-04-19

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