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Publication of FR981663ApublicationCriticalpatent/FR981663A/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
FR981663D1949-01-071949-01-07Procédé et dispositifs d'enregistrement sonore sur ruban et en particulier sur films cinématographiques
ExpiredFR981663A
(fr)