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公开(公告)号：US2077382A
公开(公告)日：1937-04-20
申请号：US4394735
申请日：1935-10-07
Applicant: SHELL DEV
Inventor： WILLIAM ENGS , ARTHUR REDMOND
CPC classification number: C07B39/00 , C07C17/10 , Y02P20/582
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