FR473896A - Système téléphonique - Google Patents

Système téléphonique

Info

Publication number: FR473896A
Authority: FR; France
Prior art keywords: telephone system; telephone
Prior art date: 1914-01-10
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

FR473896A

Other languages

English (en)

Inventor

Edward Alfred Graham

William John Rickets

Ernest Albert Sanftleben

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.)

Individual

Original Assignee

Individual

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.)

1914-01-10

Filing date

1914-06-05

Publication date

1915-01-28

1914-06-05 Application filed by Individual filed Critical Individual

1915-01-28 Application granted granted Critical

1915-01-28 Publication of FR473896A publication Critical patent/FR473896A/fr

Status Expired legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Interconnected Communication Systems, Intercoms, And Interphones (AREA)

FR473896A 1914-01-10 1914-06-05 Système téléphonique Expired FR473896A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB191400767T		1914-01-10

Publications (1)

Publication Number	Publication Date
FR473896A true FR473896A (fr)	1915-01-28

Family

ID=34360474

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR473896A Expired FR473896A (fr)	1914-01-10	1914-06-05	Système téléphonique

Country Status (2)

Country	Link
FR (1)	FR473896A (fr)
GB (4)	GB191400767A (fr)

1914
- 1914-01-10 GB GB191400767D patent/GB191400767A/en not_active Expired
- 1914-03-12 GB GB191406356D patent/GB191406356A/en not_active Expired
- 1914-04-07 GB GB191408831D patent/GB191408831A/en not_active Expired
- 1914-04-08 GB GB191408906D patent/GB191408906A/en not_active Expired
- 1914-06-05 FR FR473896A patent/FR473896A/fr not_active Expired

Also Published As

Publication number	Publication date
GB191400767A (en)	1914-08-27
GB191406356A (en)	1914-11-26
GB191408831A (en)	1914-06-11
GB191408906A (en)	1914-06-11

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