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发明名称
Anordnung zum Ausgleich des Nebensprechens in Fernmeldeleitungen
摘要
申请公布号
DE922239(C)
申请公布日期
1955.01.10
申请号
DE1952F008714
申请日期
1952.04.01
申请人
FELTEN & GUILLEAUME CARLSWERK AKTIENGESELLSCHAFT
发明人
ALICH GUENTHER
分类号
H04B3/34
主分类号
H04B3/34
代理机构
代理人
主权项
地址
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