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公开(公告)号：US2885587A
公开(公告)日：1959-05-05
申请号：US59120656
申请日：1956-06-13
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： WAINIO ALBERT W , SUTTER FREDERIC E
IPC: H01J61/067
CPC classification number: H01J61/067
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