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Publication of FR513096ApublicationCriticalpatent/FR513096A/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
G11B3/44—Styli, e.g. sapphire, diamond
G11B3/46—Constructions or forms ; Dispositions or mountings, e.g. attachment of point to shank
FR513096A1917-11-121920-04-07Système de montage pour la pointe vibrante des cornets acoustiques des machines à enregistrer et à reproduire les sons
ExpiredFR513096A
(fr)