FR1005375A - Indicateur d'identification téléphonique - Google Patents

Indicateur d'identification téléphonique

Info

Publication number: FR1005375A
Authority: FR; France
Prior art keywords: identification indicator; telephone identification; telephone; indicator; identification
Prior art date: 1947-07-10
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

English (en)

Inventor

Robert Girard

Robert Launay

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.)

1947-07-10

Filing date

1947-07-10

Publication date

1952-04-09

1947-07-10 Application filed filed Critical

1952-04-09 Application granted granted Critical

1952-04-09 Publication of FR1005375A publication Critical patent/FR1005375A/fr

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
- H04M3/64—Arrangements for signalling the number or class of the calling line to the operator

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)

FR1005375D 1947-07-10 1947-07-10 Indicateur d'identification téléphonique Expired FR1005375A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR1005375T		1947-07-10

Publications (1)

Publication Number	Publication Date
FR1005375A true FR1005375A (fr)	1952-04-09

Family

ID=9564720

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR1005375D Expired FR1005375A (fr)	1947-07-10	1947-07-10	Indicateur d'identification téléphonique

Country Status (1)

Country	Link
FR (1)	FR1005375A (fr)

1947
- 1947-07-10 FR FR1005375D patent/FR1005375A/fr not_active Expired

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