发明名称 Performance adjusting attachment for a ball bat and method of using same
摘要 An attachment for a ball bat having a proximal knob end includes a member having first and second opposing surfaces. The first surface is configured to be fixedly attached to the knob end of the bat. The member has a predetermined weight that is sufficient to adjust the performance of the bat.
申请公布号 US2004038758(A1) 申请公布日期 2004.02.26
申请号 US20020226699 申请日期 2002.08.23
申请人 WILSON SPORTING GOODS CO. 发明人 GUENTHER DOUGLAS G.
分类号 A63B59/06;(IPC1-7):A63B59/06 主分类号 A63B59/06
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