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发明名称
Schaltungsanordnung fuer Signalempfaenger in Fernsprechanlagen
摘要
申请公布号
DE603389(C)
申请公布日期
1934.09.28
申请号
DE1931S098197D
申请日期
1931.04.21
申请人
SIEMENS BROTHERS & CO. LIMITED
发明人
分类号
H04Q1/446
主分类号
H04Q1/446
代理机构
代理人
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