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JEAN BAPTISTE GALAMAND
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JEAN BAPTISTE GALAMAND
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Application filed by JEAN BAPTISTE GALAMANDfiledCriticalJEAN BAPTISTE GALAMAND
Application grantedgrantedCritical
Publication of FR334725ApublicationCriticalpatent/FR334725A/en
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
G11B23/38—Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
G11B23/42—Marks for indexing, speed-controlling, synchronising, or timing
FR334725D1903-05-291903-05-29
Regular recording of waves on discs for talking machines
ExpiredFR334725A
(en)