FR774311A - Improvements in processes for photographic sound recording - Google Patents

Improvements in processes for photographic sound recording

Info

Publication number
FR774311A
FR774311A FR774311DA FR774311A FR 774311 A FR774311 A FR 774311A FR 774311D A FR774311D A FR 774311DA FR 774311 A FR774311 A FR 774311A
Authority
FR
France
Prior art keywords
processes
sound recording
photographic sound
photographic
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
Garcia
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 FR774311A publication Critical patent/FR774311A/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
FR774311D 1933-06-10 1934-06-07 Improvements in processes for photographic sound recording Expired FR774311A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES774311X 1933-06-10

Publications (1)

Publication Number Publication Date
FR774311A true FR774311A (en) 1934-12-05

Family

ID=8246435

Family Applications (1)

Application Number Title Priority Date Filing Date
FR774311D Expired FR774311A (en) 1933-06-10 1934-06-07 Improvements in processes for photographic sound recording

Country Status (1)

Country Link
FR (1) FR774311A (en)

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