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Publication of FR420398ApublicationCriticalpatent/FR420398A/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
FR420398D1910-09-141910-09-14Disque de gramophone permettant l'enregistrement et la reproduction des voix et des sons, et son mode de fabrication
ExpiredFR420398A
(fr)
Système de synchronisme pour l'enregistrement et la reproduction de scènes parlantes animées au moyen d'un phonographe et d'un cinématographe enregistreurs et reproducteurs, et réglage de la concordance du synchronisme