发明名称 Jump rope system
摘要 A jump rope which provides a pair of handles each handle providing a shaft coaxially rotatably engaged to a first bearing element and a second bearing element which attaches to a corresponding one of the opposed ends of a cable means.
申请公布号 US2009247373(A1) 申请公布日期 2009.10.01
申请号 US20080080272 申请日期 2008.04.01
申请人 BORTH PAUL E;METZ MARY L 发明人 BORTH PAUL E.;METZ MARY L.
分类号 A63B5/20 主分类号 A63B5/20
代理机构 代理人
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