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发明名称
RECTANGULAR BEAM LAMINAR FLOW ELECTRON GUNS
摘要
申请公布号
GB1491585(A)
申请公布日期
1977.11.09
申请号
GB19750048659
申请日期
1975.11.26
申请人
WATKINS JOHNSON CO
发明人
分类号
H01J3/02;H01J29/48;H01J29/56;(IPC1-7):H01J29/48
主分类号
H01J3/02
代理机构
代理人
主权项
地址
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