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发明名称
Improvements in electrical networks for echo and like correction in electrical signalling systems
摘要
申请公布号
GB635381(A)
申请公布日期
1950.04.05
申请号
GB19470025872
申请日期
1947.09.23
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;DENNIS CLARK ESPLEY;ROBERT JAMES CLAYTON
发明人
分类号
H04B3/40
主分类号
H04B3/40
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