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公开(公告)号：US2908818A
公开(公告)日：1959-10-13
申请号：US49646755
申请日：1955-03-24
Applicant: PHILLIPS PETROLEUM CO
Inventor： SMITH DEXTER E , MERTZ CLYDE W , CROWELL LLOYD S
IPC: G01N21/35
CPC classification number: G01N21/3504 , Y10S55/30 , Y10S55/34
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