FR40722E - Manufacturing process of sound films according to the amplitude process - Google Patents

Manufacturing process of sound films according to the amplitude process

Info

Publication number
FR40722E
FR40722E FR40722DA FR40722E FR 40722 E FR40722 E FR 40722E FR 40722D A FR40722D A FR 40722DA FR 40722 E FR40722 E FR 40722E
Authority
FR
France
Prior art keywords
films according
amplitude
manufacturing process
sound 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 FR40722E publication Critical patent/FR40722E/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
FR40722D 1931-09-10 1931-09-10 Manufacturing process of sound films according to the amplitude process Expired FR40722E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR40722T 1931-09-10

Publications (1)

Publication Number Publication Date
FR40722E true FR40722E (en) 1932-08-22

Family

ID=8676970

Family Applications (1)

Application Number Title Priority Date Filing Date
FR40722D Expired FR40722E (en) 1931-09-10 1931-09-10 Manufacturing process of sound films according to the amplitude process

Country Status (1)

Country Link
FR (1) FR40722E (en)

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