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KUCHENMEISTER S INTERNATIONALE
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KUCHENMEISTER S INTERNATIONALE
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Application filed by KUCHENMEISTER S INTERNATIONALEfiledCriticalKUCHENMEISTER S INTERNATIONALE
Application grantedgrantedCritical
Publication of FR698656ApublicationCriticalpatent/FR698656A/fr
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
FR698656D1929-07-091930-07-08Perfectionnements apportés aux dispositifs pour l'obtention de films sonores
ExpiredFR698656A
(fr)