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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
主权项
地址
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