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发明名称
Receiver headband
摘要
申请公布号
US2235372(A)
申请公布日期
1941.03.18
申请号
US19380248737
申请日期
1938.12.31
申请人
SIEMENS APPARATE UND MASCHINEN GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
发明人
KALBITZ OTTO
分类号
H04R1/10
主分类号
H04R1/10
代理机构
代理人
主权项
地址
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