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公开(公告)号：US2730557A
公开(公告)日：1956-01-10
申请号：US41351654
申请日：1954-03-02
Applicant: SHELL DEV
Inventor： NICOLAAS MAX , YPE SCHAAFSMA
CPC classification number: C07C15/00 , C07C4/06 , C07C15/02 , Y10S585/905
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