发明名称 Wind resistant practice cage
摘要 A batting or ball practice cage has one or more frame members with a net attached over the frame. Frame members may be assembled having springs or elbows at the corner. A pitching machine may be aligned with the cage at one end.
申请公布号 US8172703(B2) 申请公布日期 2012.05.08
申请号 US20070653101 申请日期 2007.01.12
申请人 LAY WILLIAM COLEMAN 发明人 LAY WILLIAM COLEMAN
分类号 A63B69/00 主分类号 A63B69/00
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