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发明名称
Electron gun having a releasably clamped electron emitting element
摘要
申请公布号
US3187216(A)
申请公布日期
1965.06.01
申请号
US19610109575
申请日期
1961.05.12
申请人
WELDING RESEARCH, INC.
发明人
SCIAKY DAVID
分类号
H01J37/02;H01J37/067;H01J37/07
主分类号
H01J37/02
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代理人
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