FR45304E - Oscillographe à double corde pour enregistrements sonores - Google Patents

Oscillographe à double corde pour enregistrements sonores

Info

Publication number: FR45304E
Authority: FR; France
Prior art keywords: oscillograph; sound recordings; double string; string; double
Prior art date: 1934-03-24
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.)

CIE RADIO CINEMA

Original Assignee

CIE RADIO CINEMA

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.)

1934-03-24

Filing date

1934-03-24

Publication date

1935-07-22

1934-03-24 Application filed by CIE RADIO CINEMA filed Critical CIE RADIO CINEMA

1935-07-22 Application granted granted Critical

1935-07-22 Publication of FR45304E publication Critical patent/FR45304E/fr

Status Expired legal-status Critical Current

Classifications

- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor

FR45304D 1934-03-24 1934-03-24 Oscillographe à double corde pour enregistrements sonores Expired FR45304E (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR45304T		1934-03-24

Publications (1)

Publication Number	Publication Date
FR45304E true FR45304E (fr)	1935-07-22

Family

ID=8681061

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR45304D Expired FR45304E (fr)	1934-03-24	1934-03-24	Oscillographe à double corde pour enregistrements sonores

Country Status (1)

Country	Link
FR (1)	FR45304E (fr)

1934
- 1934-03-24 FR FR45304D patent/FR45304E/fr not_active Expired

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