FR708317A - Device for the production of sound films - Google Patents

Device for the production of sound films

Info

Publication number
FR708317A
FR708317A FR708317DA FR708317A FR 708317 A FR708317 A FR 708317A FR 708317D A FR708317D A FR 708317DA FR 708317 A FR708317 A FR 708317A
Authority
FR
France
Prior art keywords
production
sound films
films
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR708317A publication Critical patent/FR708317A/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
FR708317D 1929-12-24 1930-12-24 Device for the production of sound films Expired FR708317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE708317X 1929-12-24

Publications (1)

Publication Number Publication Date
FR708317A true FR708317A (en) 1931-07-22

Family

ID=6617588

Family Applications (1)

Application Number Title Priority Date Filing Date
FR708317D Expired FR708317A (en) 1929-12-24 1930-12-24 Device for the production of sound films

Country Status (1)

Country Link
FR (1) FR708317A (en)

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