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发明名称
Schaltungsanordnung zur UEberwachung der Verbindungen in Fernschreibvermittlungsstellen
摘要
申请公布号
DE897114(C)
申请公布日期
1953.11.19
申请号
DE1940S016043D
申请日期
1940.07.27
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
ROSSBERG EHRHARD
分类号
H04L12/26
主分类号
H04L12/26
代理机构
代理人
主权项
地址
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