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公开(公告)号：US3015669A
公开(公告)日：1962-01-02
申请号：US52811755
申请日：1955-06-21
Applicant: ZIEGLER
Inventor： KARL ZIEGLER , HANS-GEORG GELLERT , ECKARD BONITZ
IPC: C07F5/06
CPC classification number: C07F5/065
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