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发明名称
Schaltungsanordnung zur Überwachung eines ordnungsgemässen Aufbaues einer Verbindung durch ein Koppelfeld in Fernmeldeanlagen, insbesondere in Fernsprechvermittlungsanlagen
摘要
申请公布号
CH474197(A)
申请公布日期
1969.06.15
申请号
CH19680002906
申请日期
1968.02.28
申请人
SIEMENS AKTIENGESELLSCHAFT
发明人
POLLACK,WOLFGANG
分类号
H04Q3/00;(IPC1-7):H04M3/24
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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