发明名称 Tennis scorekeeper
摘要 A tennis scorekeeping device having a pair of separately formed scorekeeping units adapted to be mounted one each side of a tennis racquet handle between the head of the racquet and the handle grip of the racquet, first manually manipulatable means on one of said units for scoring game points won by opposing players, and second manually manipulatable means on the other of said units for scoring the games won by opposing players.
申请公布号 US4189143(A) 申请公布日期 1980.02.19
申请号 US19770821358 申请日期 1977.08.03
申请人 VAN AUKEN, JOHN A;VAN AUKEN, LORRAINE A 发明人 VAN AUKEN, JOHN A;VAN AUKEN, LORRAINE A
分类号 A63B71/06;(IPC1-7):A63B71/00 主分类号 A63B71/06
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