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公开(公告)号：US3417791A
公开(公告)日：1968-12-24
申请号：US61980467
申请日：1967-03-01
Applicant: SAURER AG ADOLPH
Inventor： ERNST GATTIKER
CPC classification number: D03D49/08 , B21K21/00 , D03D39/00 , D03D49/06 , D03D2700/58
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