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
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