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Individual
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Publication of FR375311ApublicationCriticalpatent/FR375311A/en
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
FR375311D1907-03-021907-03-02
Phonographic device with visible indicator
ExpiredFR375311A
(en)