CH290751A - Loudspeaker bilateral telephone system. - Google Patents

Loudspeaker bilateral telephone system.

Info

Publication number: CH290751A
Authority: CH; Switzerland
Prior art keywords: loudspeaker; telephone system; bilateral telephone; bilateral; telephone
Prior art date: 1949-06-08

Application number

Other languages

French (fr)

Inventor

Jeanlin Pierre

Original Assignee

Le Teleampliphone

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.)

1949-06-08

Filing date

1950-03-22

Publication date

1953-05-15

1950-03-22 Application filed by Le Teleampliphone filed Critical Le Teleampliphone

1953-05-15 Publication of CH290751A publication Critical patent/CH290751A/en

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)

CH290751D 1949-06-08 1950-03-22 Loudspeaker bilateral telephone system. CH290751A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR1012101T		1949-06-08

Publications (1)

Publication Number	Publication Date
CH290751A true CH290751A (en)	1953-05-15

Family

ID=9570534

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH290751D CH290751A (en)	1949-06-08	1950-03-22	Loudspeaker bilateral telephone system.

Country Status (2)

Country	Link
CH (1)	CH290751A (en)
FR (1)	FR1012101A (en)

1949
- 1949-06-08 FR FR1012101D patent/FR1012101A/en not_active Expired
1950
- 1950-03-22 CH CH290751D patent/CH290751A/en unknown

Also Published As

Publication number	Publication date
FR1012101A (en)	1952-07-04

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