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Publication of FR928014ApublicationCriticalpatent/FR928014A/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
FR928014D1946-04-301946-04-30Dispositif de reproduction et d'amplification du son pour appareils de projection cinématographique
ExpiredFR928014A
(fr)