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1.发明授权
公开(公告)号：US3217707A
公开(公告)日：1965-11-16
申请号：US23361662
申请日：1962-10-29
Applicant: WINFRIED WERDING
Inventor： WINFRIED WERDING
CPC classification number: A61F7/007 , A61F2007/0001 , A61F2007/0239 , A61F2007/0296 , A61H9/00 , A61H9/005 , A61H9/0071 , A61H2201/0207 , A61H2201/0214 , A61H2201/025
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