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1.发明授权
公开(公告)号：US2496227A
公开(公告)日：1950-01-31
申请号：US76280647
申请日：1947-07-22
Applicant: SHELL DEV
Inventor： HERMAN EILERS , JOHAN OVERHOFF , CORNELIS VLUGTER JOHANNES
CPC classification number: C07G17/002 , C08G75/16
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