FR715124A - Improvements to sound film reproducing devices - Google Patents

Improvements to sound film reproducing devices

Info

Publication number
FR715124A
FR715124A FR715124DA FR715124A FR 715124 A FR715124 A FR 715124A FR 715124D A FR715124D A FR 715124DA FR 715124 A FR715124 A FR 715124A
Authority
FR
France
Prior art keywords
reproducing devices
sound film
film reproducing
sound
devices
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
Douglas Temple Bennett
Roger John Tweedy
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 FR715124A publication Critical patent/FR715124A/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
FR715124D 1930-04-11 1931-04-11 Improvements to sound film reproducing devices Expired FR715124A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB715124X 1930-04-11

Publications (1)

Publication Number Publication Date
FR715124A true FR715124A (en) 1931-11-26

Family

ID=10494581

Family Applications (1)

Application Number Title Priority Date Filing Date
FR715124D Expired FR715124A (en) 1930-04-11 1931-04-11 Improvements to sound film reproducing devices

Country Status (1)

Country Link
FR (1) FR715124A (en)

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