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1.发明授权
公开(公告)号：US2839512A
公开(公告)日：1958-06-17
申请号：US55638555
申请日：1955-12-30
Applicant: SHELL DEV
Inventor： BARNUM EMMETT R , LORENSEN LYMAN F , JOHN ZACHAR
IPC: C08F20/08 , C10M149/10
CPC classification number: C10M149/10 , C08F20/08 , Y10T137/0391
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