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经营范围
发明名称
Mikrophon, insbesondere Doppelmikrophon
摘要
申请公布号
DE1284464(B)
申请公布日期
1968.12.05
申请号
DE196500S9835
申请日期
1965.09.30
申请人
SIEMENS AG
发明人
SAUER;MARTIN DR. RER. NAT.;GERT CONRAD,
分类号
H04R7/20;H04R23/00
主分类号
H04R7/20
代理机构
代理人
主权项
地址
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