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发明名称
Schaltungsanordnung zur Durchfuehrung einer Kombinationswahl mit Gleichstrom ueber die beiden dem Fernmelde-, insbesondere Fernsprechverkehr dienenden Adern einer Anschlussleitung
摘要
申请公布号
DE951454(C)
申请公布日期
1956.10.31
申请号
DE1954S037973
申请日期
1954.03.05
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
HORN ERNST
分类号
H04Q3/42
主分类号
H04Q3/42
代理机构
代理人
主权项
地址
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