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公开(公告)号：US2839547A
公开(公告)日：1958-06-17
申请号：US60039956
申请日：1956-07-27
Applicant: INVENTA AG
Inventor： CLAU BERTHER
IPC: B01J41/04 , C07C227/04
CPC classification number: B01J41/04 , C07C227/04
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