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发明名称
Schaltungsanordnung fuer Fernsprechanlagen zur Anzeige von in Untervermittlungsstellen auftretenden Stoerungen in Hauptvermittlungsstellen
摘要
申请公布号
DE498058(C)
申请公布日期
1930.05.17
申请号
DE1925S068542D
申请日期
1925.01.23
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
LUBBERGER DR.-ING. FRITZ
分类号
H04Q1/26
主分类号
H04Q1/26
代理机构
代理人
主权项
地址
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