FR844524A - Production of sound recordings - Google Patents

Production of sound recordings

Info

Publication number
FR844524A
FR844524A FR844524DA FR844524A FR 844524 A FR844524 A FR 844524A FR 844524D A FR844524D A FR 844524DA FR 844524 A FR844524 A FR 844524A
Authority
FR
France
Prior art keywords
production
sound recordings
recordings
sound
Prior art date
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
French (fr)
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.)
Filing date
Publication date
Application filed by RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR844524A publication Critical patent/FR844524A/en
Expired legal-status Critical Current

Links

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
FR844524D 1937-10-09 1938-10-08 Production of sound recordings Expired FR844524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US844524XA 1937-10-09 1937-10-09

Publications (1)

Publication Number Publication Date
FR844524A true FR844524A (en) 1939-07-26

Family

ID=22185047

Family Applications (1)

Application Number Title Priority Date Filing Date
FR844524D Expired FR844524A (en) 1937-10-09 1938-10-08 Production of sound recordings

Country Status (1)

Country Link
FR (1) FR844524A (en)

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