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发明名称
Verfahren zur Auftrennung einer bestehenden Hochfrequenztelephonieverbindung
摘要
申请公布号
DE703511(C)
申请公布日期
1941.03.11
申请号
DE193801S2573D
申请日期
1938.06.17
申请人
SIEMENS-SCHUCKERTWERKE AKT.-GES.
发明人
HENNING DR.-ING. WALTER
分类号
H04B3/54
主分类号
H04B3/54
代理机构
代理人
主权项
地址
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