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发明名称
Elektroakustische UEbertragungsanlage
摘要
申请公布号
DE837117(C)
申请公布日期
1952.04.21
申请号
DE1950S005275
申请日期
1950.06.01
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
SPANDOECK DR.-ING. FRIEDRICH
分类号
H04R1/20
主分类号
H04R1/20
代理机构
代理人
主权项
地址
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