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公开(公告)号：US3092676A
公开(公告)日：1963-06-04
申请号：US2589060
申请日：1960-05-02
Applicant: ENGELHARD IND INC
Inventor： HETTINGER JR WILLIAM P , KEITH CARL D , LORENC WALTER F
CPC classification number: B01J23/40 , B01J21/04 , B01J23/464 , B01J27/045 , B01J37/20 , C07C5/2791 , C07C9/00
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