发明名称 Tennis court trainer
摘要 An improved surface for a tennis court, the playing surface will have designated on it one or more locations to enable greater placement and accuracy in tennis shots. These physical locations are rectangular in nature and correspond in size to sectors or a combination of sectors whose locations are determined by equally dividing a court between the single side lanes and the net and the base line to three lanes vertically and zones horizontally. Smaller rectangular locations within the sectors may also be identified. These rectangular locations may be combinations of one or more subsectors defined by defining a sector into three sublanes and three subzones.
申请公布号 US6077176(A) 申请公布日期 2000.06.20
申请号 US19910772698 申请日期 1991.10.07
申请人 POSHADLO, JR., CLIFF 发明人 POSHADLO, JR., CLIFF
分类号 A63B69/38;A63C19/02;(IPC1-7):A63B69/38 主分类号 A63B69/38
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