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发明名称
Improvements in or relating to electrode structures for electron discharge devices
摘要
申请公布号
GB779549(A)
申请公布日期
1957.07.24
申请号
GB19530003111
申请日期
1953.02.04
申请人
ELECTRIC & MUSICAL INDUSTRIES LIMITED
发明人
PEARCE RALPH REGINALD
分类号
H01J19/42;H01J29/82
主分类号
H01J19/42
代理机构
代理人
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