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发明名称
Kondensatorrichtmikrofon
摘要
申请公布号
DE1762637(A1)
申请公布日期
1970.09.17
申请号
DE19681762637
申请日期
1968.07.25
申请人
KARL,HELMUT
发明人
KARL,HELMUT
分类号
H04R19/04
主分类号
H04R19/04
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代理人
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