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发明名称
Schaltungsanordnung fuer Telegraphenanlagen mit Reihenschaltungs- oder Ringleitungsbetrieb und Ruhestromueberwachung
摘要
申请公布号
DE525747(C)
申请公布日期
1931.05.28
申请号
DE1929S093799D
申请日期
1929.09.07
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
RASSOW DIPL.-ING. HORST
分类号
H04L12/40
主分类号
H04L12/40
代理机构
代理人
主权项
地址
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