FR693820A - Improvements to sound films and process for their manufacture - Google Patents

Improvements to sound films and process for their manufacture

Info

Publication number
FR693820A
FR693820A FR693820DA FR693820A FR 693820 A FR693820 A FR 693820A FR 693820D A FR693820D A FR 693820DA FR 693820 A FR693820 A FR 693820A
Authority
FR
France
Prior art keywords
manufacture
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.)
Kodak Pathe SA
Original Assignee
Kodak Pathe SA
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 Kodak Pathe SA filed Critical Kodak Pathe SA
Application granted granted Critical
Publication of FR693820A publication Critical patent/FR693820A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
FR693820D 1929-04-20 1930-04-12 Improvements to sound films and process for their manufacture Expired FR693820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US693820XA 1929-04-20 1929-04-20

Publications (1)

Publication Number Publication Date
FR693820A true FR693820A (en) 1930-11-25

Family

ID=22088618

Family Applications (1)

Application Number Title Priority Date Filing Date
FR693820D Expired FR693820A (en) 1929-04-20 1930-04-12 Improvements to sound films and process for their manufacture

Country Status (1)

Country Link
FR (1) FR693820A (en)

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