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发明名称
Improvements relating to electron discharge devices
摘要
申请公布号
GB423702(A)
申请公布日期
1935.02.06
申请号
GB19340012199
申请日期
1934.04.23
申请人
THE BRITISH THOMSON-HOUSTON COMPANY, LIMITED
发明人
分类号
H01J21/02
主分类号
H01J21/02
代理机构
代理人
主权项
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