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.)
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PANOPIX RES
Original Assignee
PANOPIX RES
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Publication date
Application filed by PANOPIX RESfiledCriticalPANOPIX RES
Priority to FR104935ApriorityCriticalpatent/FR1521774A/fr
Application grantedgrantedCritical
Publication of FR1521774ApublicationCriticalpatent/FR1521774A/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
FR104935A1967-05-021967-05-02Dispositif perfectionné reproducteur de sons enregistrés sur un film
ExpiredFR1521774A
(fr)