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EXPL DES BREVETS A G I PAR ABR
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EXPL DES BREVETS A G I PAR ABR
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Application filed by EXPL DES BREVETS A G I PAR ABRfiledCriticalEXPL DES BREVETS A G I PAR ABR
Application grantedgrantedCritical
Publication of FR748936ApublicationCriticalpatent/FR748936A/en
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
FR748936D1932-12-171932-12-17
Orientation device of the light brush in cinematographic inscriptions on films or photographs
ExpiredFR748936A
(en)