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公开(公告)号：US3405299A
公开(公告)日：1968-10-08
申请号：US61218167
申请日：1967-01-27
Applicant: RCA CORP
Inventor： HALL WILLIAM B , ERNST DONALD M
CPC classification number: F28D15/0233 , H01J19/36 , H01J2893/0027
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