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公开(公告)号：US3484234A
公开(公告)日：1969-12-16
申请号：US3484234D
申请日：1966-07-14
Applicant: CHRISTO NIKOLOV GUENEV
Inventor： GUENEV CHRISTO NIKOLOV
CPC classification number: C21C7/076 , B01J2/28 , C01F11/22 , C04B35/515 , Y02P10/242
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