FR822588A - Sound reproduction device - Google Patents

Sound reproduction device

Info

Publication number: FR822588A
Authority: FR; France
Prior art keywords: reproduction device; sound reproduction; sound; reproduction
Prior art date: 1935-12-02
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.)

RCA Corp

Original Assignee

RCA Corp

Radio Corporation of America

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.)

1935-12-02

Filing date

1936-11-16

Publication date

1938-01-04

1936-11-16 Application filed by RCA Corp, Radio Corporation of America filed Critical RCA Corp

1938-01-04 Application granted granted Critical

1938-01-04 Publication of FR822588A publication Critical patent/FR822588A/en

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

FR822588D 1935-12-02 1936-11-16 Sound reproduction device Expired FR822588A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US822588XA	1935-12-02	1935-12-02

Publications (1)

Publication Number	Publication Date
FR822588A true FR822588A (en)	1938-01-04

Family

ID=22170066

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR822588D Expired FR822588A (en)	1935-12-02	1936-11-16	Sound reproduction device

Country Status (1)

Country	Link
FR (1)	FR822588A (en)

1936
- 1936-11-16 FR FR822588D patent/FR822588A/en not_active Expired

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