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公开(公告)号:US2725031A
公开(公告)日:1955-11-29
申请号:US32701952
申请日:1952-12-19
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor: CAMPBELL JOHN M
IPC: H01J9/30
CPC classification number: H01J9/30
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2.
公开(公告)号:US2439884A
公开(公告)日:1948-04-20
申请号:US64614646
申请日:1946-02-07
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor: CAMPBELL JOHN M
IPC: H01J9/30
CPC classification number: H01J9/30
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公开(公告)号:US2533712A
公开(公告)日:1950-12-12
申请号:US52857044
申请日:1944-03-29
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor: CAMPBELL JOHN M
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公开(公告)号:US2725919A
公开(公告)日:1955-12-06
申请号:US25155451
申请日:1951-10-16
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor: BRENT GEORGE D , CAMPBELL JOHN M , GUSTIN DANIEL S
IPC: H01J9/30
CPC classification number: H01J9/30 , Y10T156/1771
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