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发明名称
Elektromagnetischer Tonabnehmer
摘要
申请公布号
DE690377(C)
申请公布日期
1940.04.24
申请号
DE1932B156832D
申请日期
1932.08.02
申请人
ADOLF BRAUN
发明人
分类号
G11B3/46;H04R11/08
主分类号
G11B3/46
代理机构
代理人
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