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Filing date
Publication date
Application filed by Rca CorpfiledCriticalRca Corp
Publication of CH260120ApublicationCriticalpatent/CH260120A/de
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
CH260120D1946-02-231947-02-20Verfahren zur Herstellung von in der Schallplattenindustrie zu verwendenden Mutterformen.
CH260120A
(de)