FR949625A - Sound reproduction device - Google Patents

Sound reproduction device

Info

Publication number
FR949625A
FR949625A FR949625DA FR949625A FR 949625 A FR949625 A FR 949625A FR 949625D A FR949625D A FR 949625DA FR 949625 A FR949625 A FR 949625A
Authority
FR
France
Prior art keywords
reproduction device
sound reproduction
sound
reproduction
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.)
Kodak Pathe SA
Original Assignee
Kodak Pathe SA
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 Kodak Pathe SA filed Critical Kodak Pathe SA
Application granted granted Critical
Publication of FR949625A publication Critical patent/FR949625A/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
FR949625D 1939-05-09 1947-07-18 Sound reproduction device Expired FR949625A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US949625XA 1939-05-09 1939-05-09

Publications (1)

Publication Number Publication Date
FR949625A true FR949625A (en) 1949-09-05

Family

ID=22248198

Family Applications (1)

Application Number Title Priority Date Filing Date
FR949625D Expired FR949625A (en) 1939-05-09 1947-07-18 Sound reproduction device

Country Status (1)

Country Link
FR (1) FR949625A (en)

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