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公开(公告)号：US3153312A
公开(公告)日：1964-10-20
申请号：US18801562
申请日：1962-04-17
Applicant: LEESONA CORP
Inventor： BUSHEY THOMAS N
CPC classification number: D01H13/187 , B65H51/10 , B65H2701/31
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