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公开(公告)号：US2744836A
公开(公告)日：1956-05-08
申请号：US29344052
申请日：1952-06-13
Applicant: BASF AG
Inventor： RUDOLF SCHUBERT , GERHARD OTTO
IPC: C14C11/00
CPC classification number: C14C11/003 , Y10T428/31768
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