FR489728A - Dispositifs de supervision en téléphonie automatique - Google Patents

Dispositifs de supervision en téléphonie automatique

Info

Publication number: FR489728A
Authority: FR; France
Prior art keywords: automatic telephony; supervision devices; supervision; devices; telephony
Prior art date: 1915-07-19
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.)

Compagnie Francaise Thomson Houston SA

Original Assignee

Compagnie Francaise Thomson Houston SA

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.)

1915-07-19

Filing date

1916-07-05

Publication date

1919-03-05

1916-07-05 Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA

1919-03-05 Application granted granted Critical

1919-03-05 Publication of FR489728A publication Critical patent/FR489728A/fr

Status Expired legal-status Critical Current

Links

FR489728D 1915-07-19 1916-07-05 Dispositifs de supervision en téléphonie automatique Expired FR489728A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US489728XA	1915-07-19	1915-07-19

Publications (1)

Publication Number	Publication Date
FR489728A true FR489728A (fr)	1919-03-05

Family

ID=43351830

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR489728D Expired FR489728A (fr)	1915-07-19	1916-07-05	Dispositifs de supervision en téléphonie automatique

Country Status (1)

Country	Link
FR (1)	FR489728A (fr)

1916
- 1916-07-05 FR FR489728D patent/FR489728A/fr not_active Expired

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