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公开(公告)号：US2881904A
公开(公告)日：1959-04-14
申请号：US56112256
申请日：1956-01-24
Applicant: FRIEDRICH K H STUEBBE
Inventor： ROBERT HOERTH
CPC classification number: B65G17/385 , B65G2201/06 , F16G1/28
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