FR1032340A - Procédé d'amélioration pour l'entretien des aiguilles non métalliques utiliséespour la reproduction du son enregistré par sillons
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Procédé d'amélioration pour l'entretien des aiguilles non métalliques utiliséespour la reproduction du son enregistré par sillons
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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
G11B3/58—Cleaning record carriers or styli, e.g. removing shavings or dust or electrostatic charges
FR1032340D1951-02-121951-02-12Procédé d'amélioration pour l'entretien des aiguilles non métalliques utiliséespour la reproduction du son enregistré par sillons
ExpiredFR1032340A
(fr)