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公开(公告)号：US2968308A
公开(公告)日：1961-01-17
申请号：US64910057
申请日：1957-03-28
Applicant: PHILLIPS PETROLEUM CO
Inventor： LUPFER DALE E , COUGHENOUR ROBERT D
CPC classification number: G01N1/28 , B01D17/045 , G01N21/41 , G01N33/2829 , Y10T137/0318
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