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公开(公告)号：US3056062A
公开(公告)日：1962-09-25
申请号：US30450252
申请日：1952-08-15
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： MAX GARBUNY , TALBOT JOHN S
CPC classification number: H01J31/265 , H01J29/38 , H01J29/385 , H01J31/49
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