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发明名称
Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb
摘要
申请公布号
DE572971(C)
申请公布日期
1933.03.25
申请号
DE1929S093933D
申请日期
1929.09.15
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
DREYER HANS
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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