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发明名称
Perfectionnements aux machines et aux procédés pour la fabrication et l'enregistrement des disques phonographiques
摘要
申请公布号
FR789741(A)
申请公布日期
1935.11.05
申请号
FRD789741
申请日期
1935.05.08
申请人
AMERICAN BRAILLE PRESS FOR WAR & CIVILIAN BLIND, INC.
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