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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)
Système de montage des collecteurs de sons ou pavillons de phonographes permettant de modifier continuellement leur orientation en vue de l'enregistrement de sons émis de différents points d'une scène