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公开(公告)号：US3476669A
公开(公告)日：1969-11-04
申请号：US3476669D
申请日：1966-04-06
Applicant: BASF AG
Inventor： BECKMANN WILHELM , KENGELBACH WERNER LUDWIG , PAPE MARTIN
CPC classification number: B28C7/0841 , B01F15/066 , B01J19/123
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