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公开(公告)号：US2723994A
公开(公告)日：1955-11-15
申请号：US20611651
申请日：1951-01-15
Applicant: SHELL DEV
Inventor： HAEFELE WALTER R , HEARNE GEORGE W , BALLARD SEAVER A
IPC: C07C51/265
CPC classification number: C07C51/265 , C07C63/26 , C07C63/24
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