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Publication of FR39967EpublicationCriticalpatent/FR39967E/fr
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
FR39967D1930-08-131930-08-13Procédé d'enregistrement et de reproduction des sons et nouveau produit industriel en résultant
ExpiredFR39967E
(fr)
Procédé et appareils d'enregistrement et de reproduction de vibrations mécaniques et notamment des sons, et nouveau produit industriel en résultant
Procédé et appareils d'enregistrement et de reproduction de vibrations mécaniques et notamment des sons, et nouveau produit industriel en résultant