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发明名称
Schaltungsanordnung zum Pruefen von Leitungen, insbesondere in Fernsprechanlagen
摘要
申请公布号
DE530557(C)
申请公布日期
1931.07.30
申请号
DE1925S070562D
申请日期
1925.06.28
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
FLAD ARTUR
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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