Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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PATHE MARCONI IND MUSIC
Original Assignee
PATHE MARCONI IND MUSIC
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Application filed by PATHE MARCONI IND MUSICfiledCriticalPATHE MARCONI IND MUSIC
Application grantedgrantedCritical
Publication of FR874362ApublicationCriticalpatent/FR874362A/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
FR874362D1941-07-311941-07-31Perfectionnements à la fabrication des disques de phonographes
ExpiredFR874362A
(fr)