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公开(公告)号：US3245794A
公开(公告)日：1966-04-12
申请号：US23378062
申请日：1962-10-29
Applicant: IHILCO CORP
Inventor： CONLEY JAMES W
CPC classification number: G03B27/53 , C23F1/02 , H01J3/10 , Y10S438/948
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