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发明名称
Disques de phonographes
摘要
申请公布号
FR761578(A)
申请公布日期
1934.03.22
申请号
FRD761578
申请日期
1933.08.16
申请人
CONSORTIUM FUR ELEKTROCHEMISCHE INDUSTRIE G.M.B.H.
发明人
分类号
G11B3/70
主分类号
G11B3/70
代理机构
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