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公开(公告)号：US2697731A
公开(公告)日：1954-12-21
申请号：US20981551
申请日：1951-02-07
Applicant: STANDARD OIL DEV CO
Inventor： NAGEL RICHARD H
IPC: C07C29/16
CPC classification number: C07C29/16 , C07C31/125
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