发明名称 Weighted practice bat
摘要 A weighted practice bat comprising a bat having a barrel and a handle and the bat having a determinable center of percussion. A weighted ring is attached to the barrel at the location of the center of percussion. The ring includes a hole for receiving a fastener which engages the barrel and secures the ring to the barrel.
申请公布号 US6010415(A) 申请公布日期 2000.01.04
申请号 US19970864442 申请日期 1997.05.27
申请人 MIGGINS, LAWRENCE E. 发明人 MIGGINS, LAWRENCE E.
分类号 A63B69/00;(IPC1-7):A63B59/00;A63B59/06 主分类号 A63B69/00
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