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发明名称
Aus mindestens einer Vierkanaleinheit bestehende Trägerfrequenzanlage für Gegensprechverkehr
摘要
申请公布号
CH316565(A)
申请公布日期
1956.10.15
申请号
CHD316565
申请日期
1952.12.27
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
SURGUY CARUTHERS,ROBERT;KENNETH VAN TASSEL,EARL
分类号
H04J1/04;H04J1/10;H04J1/18
主分类号
H04J1/04
代理机构
代理人
主权项
地址
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