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发明名称
Schaltungsanordnung zur Anzeige unbefugter Eingriffe in Muenzfernsprecher in der Vermittlungsstelle
摘要
申请公布号
DE640561(C)
申请公布日期
1937.01.07
申请号
DE1932S102801D
申请日期
1932.01.15
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
分类号
H04M17/02
主分类号
H04M17/02
代理机构
代理人
主权项
地址
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