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Publication of FR375739ApublicationCriticalpatent/FR375739A/en
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
FR375739D1907-03-151907-03-15
Process for gramophonic recording by the light of cylinders, discs or tapes of speaking machines
ExpiredFR375739A
(en)