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发明名称
Electron lens structure
摘要
申请公布号
US2420514(A)
申请公布日期
1947.05.13
申请号
US19440537273
申请日期
1944.05.25
申请人
GENERAL ELECTRIC COMPANY
发明人
BACHMAN CHARLES H.
分类号
H01J29/62;H01J37/12
主分类号
H01J29/62
代理机构
代理人
主权项
地址
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