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发明名称
Telegraphenanlage mit Fernein- und -ausschaltung der Teilnehmerapparate
摘要
申请公布号
DE574007(C)
申请公布日期
1933.04.07
申请号
DE1929S091775D
申请日期
1929.05.19
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
ROSSBERG EHRHARD
分类号
H04L12/12
主分类号
H04L12/12
代理机构
代理人
主权项
地址
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