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发明名称
nmeldeanlagen mit Stufenrelais als Anruf- und Trennrelais
摘要
申请公布号
DE690140(C)
申请公布日期
1940.04.17
申请号
DE193100S7022D
申请日期
1931.02.28
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
PREUSH ALEXANDER BRUNO
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
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