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公开(公告)号：US3298726A
公开(公告)日：1967-01-17
申请号：US43527365
申请日：1965-02-25
Applicant: LEESONA CORP
Inventor： FRANCIS DAVID O
IPC: B65H69/04
CPC classification number: B65H69/04 , B65H2701/31
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