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J CASTELIN ET CIE SOC
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J CASTELIN ET CIE SOC
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Application filed by J CASTELIN ET CIE SOCfiledCriticalJ CASTELIN ET CIE SOC
Application grantedgrantedCritical
Publication of FR330046ApublicationCriticalpatent/FR330046A/fr
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
G11B3/68—Record carriers
G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
FR330046D1903-03-071903-03-07Production d'une marque indélébile sur les cylindres phonographiques
ExpiredFR330046A
(fr)