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发明名称
Electron tube apparatus
摘要
申请公布号
US2227097(A)
申请公布日期
1940.12.31
申请号
US19360082300
申请日期
1936.05.28
申请人
ELECTRIC & MUSICAL INDUSTRIES LIMITED
发明人
LUBSZYNSKI HANS GERHARD
分类号
H01J29/02;H01J31/28;H01J31/32
主分类号
H01J29/02
代理机构
代理人
主权项
地址
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