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发明名称
Empfangsschaltung fuer Niederfrequenz- oder Traegerstromfernsprechsysteme
摘要
申请公布号
DE841924(C)
申请公布日期
1952.06.19
申请号
DE1948P024581
申请日期
1948.12.14
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
ENSINK JOHANNES
分类号
H04J1/14;H04Q1/446
主分类号
H04J1/14
代理机构
代理人
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