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公开(公告)号：US3143357A
公开(公告)日：1964-08-04
申请号：US18832162
申请日：1962-04-18
Applicant: NORMAN KRUPNIK
Inventor： NORMAN KRUPNIK
CPC classification number: A47C15/006 , B62B15/00 , B62B15/006
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