FR692425A - Perfectionnement à la cinématographie sonore - Google Patents

Perfectionnement à la cinématographie sonore

Info

Publication number
FR692425A
FR692425A FR692425DA FR692425A FR 692425 A FR692425 A FR 692425A FR 692425D A FR692425D A FR 692425DA FR 692425 A FR692425 A FR 692425A
Authority
FR
France
Prior art keywords
cinematography
sound
improvement
sound cinematography
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
English (en)
Inventor
Andre-Leon-Victor-Cl Debrie
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 FR692425A publication Critical patent/FR692425A/fr
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
FR692425D 1929-06-15 1929-06-15 Perfectionnement à la cinématographie sonore Expired FR692425A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR692425T 1929-06-15

Publications (1)

Publication Number Publication Date
FR692425A true FR692425A (fr) 1930-11-05

Family

ID=9037547

Family Applications (1)

Application Number Title Priority Date Filing Date
FR692425D Expired FR692425A (fr) 1929-06-15 1929-06-15 Perfectionnement à la cinématographie sonore

Country Status (1)

Country Link
FR (1) FR692425A (fr)

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