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公开(公告)号：US3312855A
公开(公告)日：1967-04-04
申请号：US24949763
申请日：1963-01-04
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： MELLING RICHARD J
IPC: H01J41/04
CPC classification number: H01J41/04
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公开(公告)号：US3254256A
公开(公告)日：1966-05-31
申请号：US21611662
申请日：1962-08-10
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： MELLING RICHARD J , BETTS BOYD J
IPC: H01J41/04
CPC classification number: H01J41/04
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