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发明名称
Improvements in or relating to electron discharge apparatus
摘要
申请公布号
GB663837(A)
申请公布日期
1951.12.27
申请号
GB19470032803
申请日期
1947.12.12
申请人
WESTERN ELECTRIC COMPANY
发明人
分类号
H01J31/04;H03M1/00;H03M13/00;H04B14/02;H04B14/04
主分类号
H01J31/04
代理机构
代理人
主权项
地址
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