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公开(公告)号：US3512030A
公开(公告)日：1970-05-12
申请号：US3512030D
申请日：1967-06-16
Applicant: VITRO CORP OF AMERICA
Inventor： LEVY MAURICE E
CPC classification number: H05H1/48 , H01J47/022 , H01J61/04 , H01J61/52
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