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发明名称
Einrichtung zum Prüfen der Ablaufzeit von Nummernschaltern für Fernsprecher.
摘要
申请公布号
AT156745(B)
申请公布日期
1939.08.10
申请号
ATD156745
申请日期
1937.01.07
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
DIPL. ING. KURT FUERNBERG
分类号
主分类号
代理机构
代理人
主权项
地址
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