发明名称 Abrasive relief device for the foot
摘要 A bar defining a flat base and a surface having a longitudinal flat center section merging bilaterally into curved sections which extend to the edges of the base, the surface of the bar is divided into an abrasive and a nonabrasive portion.
申请公布号 US4246914(A) 申请公布日期 1981.01.27
申请号 US19790002543 申请日期 1979.01.10
申请人 KEYSER, EARL W. 发明人 KEYSER, EARL W.
分类号 A61B17/32;A61B17/54;(IPC1-7):A45D29/20 主分类号 A61B17/32
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