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公开(公告)号：US2166698A
公开(公告)日：1939-07-18
申请号：US16442137
申请日：1937-09-17
Applicant: SHELL DEV
Inventor： CLYVE ALLEN
IPC: C07C201/04 , C07C203/00
CPC classification number: C07C201/04 , C07C203/00
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