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公开(公告)号：US2872043A
公开(公告)日：1959-02-03
申请号：US58971056
申请日：1956-06-06
Applicant: FRAM CORP
Inventor： FITZGERALD JOSEPH N , GERHARDT JOHN W , REDMON OWEN C
CPC classification number: C10G33/06 , B01D17/045 , B01D17/10 , Y10S210/05
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