发明名称 Tennis score keeper
摘要 A small sized device is disclosed for keeping score of a tennis match, and which can be conveniently carried either around a player's wrist, mounted on a racquet or the like; the score keeper including a frame on which is imprinted a row of point scores and a row of game scores along which arrows for each player are slidable.
申请公布号 US4331098(A) 申请公布日期 1982.05.25
申请号 US19760728209 申请日期 1976.09.30
申请人 RUBANO, ALDO 发明人 RUBANO, ALDO
分类号 A63B71/06;(IPC1-7):A63F1/18;A63B49/00 主分类号 A63B71/06
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