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公开(公告)号：US1720300A
公开(公告)日：1929-07-09
申请号：US3403025
申请日：1925-06-01
Applicant: STANDARD OIL CO
Inventor： SULLIVAN JR FREDERICK W , MCGILL WILLIAM J , WALKER HARRY L
CPC classification number: C10G73/025 , B01D35/12 , B01D37/00
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