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公开(公告)号：US3027107A
公开(公告)日：1962-03-27
申请号：US3031160
申请日：1960-05-19
Applicant: LEESONA CORP
Inventor： NORTHUP JR JOSEPH A , WALDEN RICHARD I
IPC: B65H67/08
CPC classification number: B65H67/085 , B65H2701/31
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