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公开(公告)号：US2963601A
公开(公告)日：1960-12-06
申请号：US67687157
申请日：1957-08-07
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： VANERIN JR LAWRENCE J , SCHULZ GEORGE J
IPC: H01J41/04
CPC classification number: H01J41/04
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