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发明名称
Improvements in or relating to electrical signalling systems
摘要
申请公布号
GB960388(A)
申请公布日期
1964.06.10
申请号
GB19600041577
申请日期
1960.12.02
申请人
BRITISH TELECOMMUNICATIONS RESEARCH LIMITED
发明人
CROFT GEOFFREY FRANCIS;DOVIS JOHN CHRISTOPHER HAMMOND
分类号
H04J3/06
主分类号
H04J3/06
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代理人
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