发明授权
- 专利标题: Thermionic cathodes
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申请号: US44620654申请日: 1954-07-28
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公开(公告)号: US2912611A公开(公告)日: 1959-11-10
- 发明人: WILLIAM BECK ARNOLD HUGH , BUTLER CUTTING ALAN , DOUGLAS BRISBANE ALAN , GEORGE KING
- 申请人: INT STANDARD ELECTRIC CORP
- 专利权人: Int Standard Electric Corp
- 当前专利权人: Int Standard Electric Corp
- 优先权: GB328590X 1953-08-14; GB3013171X 1955-06-23
- 主分类号: H01J1/28
- IPC分类号: H01J1/28 ; H01J3/02 ; H01J9/04
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