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发明名称
Improvements in or relating to frequency converting electron discharge tubes
摘要
申请公布号
GB860058(A)
申请公布日期
1961.02.01
申请号
GB19590014270
申请日期
1959.04.27
申请人
ENGLISH ELECTRIC VALVE COMPANY LIMITED
发明人
DAVID JOHN;CHALK GRAEME OLIVER
分类号
H01J25/49;H03D7/20
主分类号
H01J25/49
代理机构
代理人
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