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Publication of FR343590ApublicationCriticalpatent/FR343590A/fr
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
G11B25/02—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus using cylindrical record carriers
FR343590D1903-11-131904-06-01Appareil électrique pour la transmission, la réception, l'enregistrement et la reproduction des sons
ExpiredFR343590A
(fr)