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发明名称
Schaltungsanordnung fuer Teilnehmerstationen in Fernsprechanlagen
摘要
申请公布号
DE592679(C)
申请公布日期
1934.02.13
申请号
DE1931S097504D
申请日期
1931.03.19
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
PFEIFFER ALFRED
分类号
H04M1/31
主分类号
H04M1/31
代理机构
代理人
主权项
地址
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