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公开(公告)号：US1949109A
公开(公告)日：1934-02-27
申请号：US46094030
申请日：1930-06-13
Applicant: STANDARD IG CO
Inventor： MATHIAS PIER , KURT WISSEL , WALTER DINKLER
IPC: B01J19/02
CPC classification number: B01J19/02 , B01J2219/0236
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