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发明名称
Basing vacuum tubes and similar articles
摘要
申请公布号
US1844669(A)
申请公布日期
1932.02.09
申请号
US19280285143
申请日期
1928.06.13
申请人
GENERAL ELECTRIC COMPANY
发明人
MCNEIL RODERICK S.;BITTERLI EMILE V.
分类号
H01J5/54
主分类号
H01J5/54
代理机构
代理人
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