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Publication of FR701605ApublicationCriticalpatent/FR701605A/fr
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
G11B19/20—Driving; Starting; Stopping; Control thereof
G11B19/26—Speed-changing arrangements; Reversing arrangements; Drive-transfer means therefor
G11B19/265—Friction wheel drive
FR701605D1930-09-021930-09-02Dispositif pour enregistrer et reproduire les disques phonographiques à vitesse linéaire constante
ExpiredFR701605A
(fr)
Dispositif pour l'enregistrement et la reproduction de films, en particulier de films sonores, comportant plusieurs enregistrements différents disposés le long du film