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经营范围
发明名称
Circuit concentrateur de lignes à quatre fils.
摘要
申请公布号
BE600136(A1)
申请公布日期
1961.05.29
申请号
BE19610600136
申请日期
1961.02.13
申请人
WESTERN ELECTRIC COMPANY INCORPORATED
发明人
DENNIS BRYAN JAMES;KENNETH PAUL KRETSCH
分类号
H04Q11/04;(IPC1-7):H04M
主分类号
H04Q11/04
代理机构
代理人
主权项
地址
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