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经营范围
发明名称
Perfectionnement aux machines d'enregistrement phonographique
摘要
申请公布号
FR901175(A)
申请公布日期
1945.07.19
申请号
FRD901175
申请日期
1944.01.13
申请人
LES INDUSTRIES MUSICALES ET ELECTRIQUES PATHE-MARCONI
发明人
分类号
G11B3/00
主分类号
G11B3/00
代理机构
代理人
主权项
地址
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