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公开(公告)号：US3105043A
公开(公告)日：1963-09-24
申请号：US3185560
申请日：1960-05-26
Applicant: IMPROVED MACHINERY INC
Inventor： RICH JOHN P , OSCAR LUTHI , NELSON SAUNDERS
IPC: B01D33/067 , B21D47/00
CPC classification number: B21D47/00 , B01D33/067 , B01D33/073 , B01D33/466
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