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公开(公告)号：US3118177A
公开(公告)日：1964-01-21
申请号：US3727160
申请日：1960-06-20
Applicant: ASEA AB
Inventor： VON PLATEN BALTZAR CARL
CPC classification number: B01J3/067 , B30B11/004 , B30B11/007 , Y10S264/50 , Y10S425/019
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