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公开(公告)号：US2662185A
公开(公告)日：1953-12-08
申请号：US23408851
申请日：1951-06-28
Applicant: CONS ENG CORP
Inventor： ROBINSON LELAND P , WASHBURN HAROLD W , HIRSCHBERG WALTER J
IPC: H01J49/02
CPC classification number: H01J49/022
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