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公开(公告)号：US2768990A
公开(公告)日：1956-10-30
申请号：US30011552
申请日：1952-07-21
Applicant: STAMICARBON
Inventor： DE JONG GEERT J , TERBLIJT
IPC: B01J41/12
CPC classification number: C22B3/42 , B01J41/13 , C22B3/24 , Y02P10/234
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