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发明名称
Improvements in or relating to multichannel communication systems
摘要
申请公布号
GB854718(A)
申请公布日期
1960.11.23
申请号
GB19590006104
申请日期
1959.02.23
申请人
WESTERN ELECTRIC COMPANY
发明人
分类号
H04J3/17
主分类号
H04J3/17
代理机构
代理人
主权项
地址
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