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发明名称
Ion pumping electron gun
摘要
申请公布号
US3394874(A)
申请公布日期
1968.07.30
申请号
US19670614879
申请日期
1967.02.09
申请人
GENERAL ELECTRODYNAMICS CORPORATION
发明人
MARSHALL FREDERICK J.
分类号
H01J29/94
主分类号
H01J29/94
代理机构
代理人
主权项
地址
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