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公开(公告)号：US2875224A
公开(公告)日：1959-02-24
申请号：US66702457
申请日：1957-06-20
Applicant: SHELL DEV
Inventor： WINKLE JOHN L VAN , BELL CHARLES S , MORRIS RUPERT C
IPC: C07F9/52
CPC classification number: C07F9/52
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