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经营范围
发明名称
Perfectionnements apportés aux bras acoustiques de phonographes
摘要
申请公布号
FR691096(A)
申请公布日期
1930.10.01
申请号
FRD691096
申请日期
1930.03.05
申请人
发明人
QUINN JAMES MC
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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