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公开(公告)号：US2938859A
公开(公告)日：1960-05-31
申请号：US65565857
申请日：1957-04-29
Applicant: STANDARD OIL CO
Inventor： HERTWIG WALDEMAR R , GROH ALAN B , HERRING WILLIAM M , PANSING WILLIAM F
IPC: B01J23/96
CPC classification number: B01J23/96
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