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发明名称
DEVICE FOR DETECTING THE IMPACT OF A TENNIS BALL
摘要
The device for detecting the impact of a tennis ball (fig. 3) is intended to train players, analyse their level and define their precision. Each ball impact on the carpet is recorded by a counter or processed by a microprocessor.
申请公布号
WO8605108(A3)
申请公布日期
1987.05.21
申请号
WO1986CH00027
申请日期
1986.03.04
申请人
SZEDRESSY, IVAN
发明人
SZEDRESSY, IVAN
分类号
A63B63/00;A63B69/38
主分类号
A63B63/00
代理机构
代理人
主权项
地址
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