FR815434A - Installation de transmission acoustique - Google Patents

Installation de transmission acoustique

Info

Publication number: FR815434A
Authority: FR; France
Prior art keywords: sound transmission; transmission installation; installation; sound; transmission
Prior art date: 1936-03-23
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

Inventor

Eppler Jean

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.)

1936-03-23

Filing date

1936-03-23

Publication date

1937-07-12

1936-03-23 Application filed filed Critical

1937-07-12 Application granted granted Critical

1937-07-12 Publication of FR815434A publication Critical patent/FR815434A/fr

Status Expired legal-status Critical Current

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)
Amplifiers (AREA)

FR815434D 1936-03-23 1936-03-23 Installation de transmission acoustique Expired FR815434A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR815434T		1936-03-23

Publications (1)

Publication Number	Publication Date
FR815434A true FR815434A (fr)	1937-07-12

Family

ID=9267247

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
FR788456D Expired FR788456A (fr)	1936-03-23	1935-04-01	Dispositif téléphonique applicable aux amplificateurs à fréquence acoustique
FR815434D Expired FR815434A (fr)	1936-03-23	1936-03-23	Installation de transmission acoustique

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
FR788456D Expired FR788456A (fr)	1936-03-23	1935-04-01	Dispositif téléphonique applicable aux amplificateurs à fréquence acoustique

Country Status (3)

Country	Link
BE (1)	BE414653A (fr)
FR (2)	FR788456A (fr)
GB (1)	GB477967A (fr)

0
- BE BE414653D patent/BE414653A/xx unknown
1935
- 1935-04-01 FR FR788456D patent/FR788456A/fr not_active Expired
1936
- 1936-03-23 FR FR815434D patent/FR815434A/fr not_active Expired
- 1936-04-01 GB GB9664/36A patent/GB477967A/en not_active Expired

Also Published As

Publication number	Publication date
GB477967A (en)	1938-01-06
BE414653A (fr)
FR788456A (fr)	1935-10-10

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