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发明名称
Einrichtung fuer Vielfachtelefonie
摘要
申请公布号
DE705276(C)
申请公布日期
1941.04.23
申请号
DE1939T052704D
申请日期
1939.08.17
申请人
TELEFUNKEN GESELLSCHAFT FUER DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
SCHROETER FRITZ
分类号
H04J3/04
主分类号
H04J3/04
代理机构
代理人
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地址
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