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公开(公告)号：US2658871A
公开(公告)日：1953-11-10
申请号：US11406649
申请日：1949-09-03
Applicant: STANDARD OIL DEV CO
Inventor： SMITH JR PAUL V , MCPHERSON JR JAMES B
CPC classification number: C10M1/08 , C10M2223/04 , C10M2223/042
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