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公开(公告)号：US2764477A
公开(公告)日：1956-09-25
申请号：US45485454
申请日：1954-09-08
Applicant: ETHYL CORP
Inventor： RISK THOMAS H
CPC classification number: C10L1/143 , C10L1/14 , C10L1/1616 , C10L1/1881 , C10L1/1886 , C10L1/1985 , C10L1/231
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