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公开(公告)号：US3542016A
公开(公告)日：1970-11-24
申请号：US3542016D
申请日：1968-03-18
Applicant: DAVID E ZIMMER
Inventor： ZIMMER DAVID E
CPC classification number: A61H15/02 , A61H2015/0064 , A61H2201/105
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