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公开(公告)号：US3275190A
公开(公告)日：1966-09-27
申请号：US44654865
申请日：1965-04-08
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： LIVERA PHILLIP A , LYONS SAMUEL B
IPC: H01J9/46
CPC classification number: H01J9/46 , H01J2893/0096 , H01J2893/0097
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