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公开(公告)号：US2788196A
公开(公告)日：1957-04-09
申请号：US32176252
申请日：1952-11-21
Applicant: BASF AG
Inventor： HANS-RUDOLF JACOBI , HANS BECK
IPC: B65G23/00
CPC classification number: B65G23/00 , B65G2811/096 , Y10T74/19884
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