FR645648A - Sound recording device - Google Patents

Sound recording device

Info

Publication number
FR645648A
FR645648A FR645648DA FR645648A FR 645648 A FR645648 A FR 645648A FR 645648D A FR645648D A FR 645648DA FR 645648 A FR645648 A FR 645648A
Authority
FR
France
Prior art keywords
recording device
sound recording
sound
recording
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)
Inventor
Heinrich Kuchenmeister
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 filed Critical
Application granted granted Critical
Publication of FR645648A publication Critical patent/FR645648A/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
FR645648D 1926-12-15 1927-12-13 Sound recording device Expired FR645648A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE645648X 1926-12-15

Publications (1)

Publication Number Publication Date
FR645648A true FR645648A (en) 1928-10-29

Family

ID=6580743

Family Applications (1)

Application Number Title Priority Date Filing Date
FR645648D Expired FR645648A (en) 1926-12-15 1927-12-13 Sound recording device

Country Status (1)

Country Link
FR (1) FR645648A (en)

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