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发明名称
Improvements relating to electron discharge devices such as television transmission tubes
摘要
申请公布号
GB645756(A)
申请公布日期
1950.11.08
申请号
GB19470027466
申请日期
1947.10.14
申请人
ELECTRIC & MUSICAL INDUSTRIES LIMITED
发明人
MCGEE JAMES DWYER
分类号
H01J31/34
主分类号
H01J31/34
代理机构
代理人
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