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公开(公告)号：US3032387A
公开(公告)日：1962-05-01
申请号：US80700459
申请日：1959-04-17
Applicant: ENGELHARD IND INC
Inventor： ANDERSEN HOLGER C , COHN JOHANN G E , GLOGAN RICHARD C
CPC classification number: B01D53/8625 , C01B21/26
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