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经营范围
发明名称
Golf swing trainer having balanced center of mass
摘要
A golf swing trainer providing a resiliently flexible shaft having a first shaft end coupled to a swing element and a second shaft end coupled to a grip having a tapered external surface gripably received by the hands.
申请公布号
US2009082124(A1)
申请公布日期
2009.03.26
申请号
US20070904214
申请日期
2007.09.26
申请人
HACKENBERG JAMES A
发明人
HACKENBERG JAMES A.
分类号
A63B69/36
主分类号
A63B69/36
代理机构
代理人
主权项
地址
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