发明名称 Protective screen
摘要 A pitching screen which provides a support structure having an arcuate support element which defines the boundary of the pitching screen and about which a ball can be pitched toward a pitching target.
申请公布号 US2011306445(A1) 申请公布日期 2011.12.15
申请号 US201113199128 申请日期 2011.08.19
申请人 MORROW WILLIAM DAVID;MORROW SPORTS, LLC 发明人 MORROW WILLIAM DAVID
分类号 A63B69/00 主分类号 A63B69/00
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