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经营范围
发明名称
Konzentrisches Magnetsystem fuer Telefone und magnetische Mikrofone
摘要
申请公布号
DE899673(C)
申请公布日期
1953.12.14
申请号
DE1952S027665
申请日期
1952.03.16
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
GOSEWINKEL DIPL.-ING. MARTIN
分类号
H04R11/00
主分类号
H04R11/00
代理机构
代理人
主权项
地址
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