发明名称 Putting practice device
摘要 A putting practice device in which the diameter of the ball-receiving cup of the device can be made smaller or larger to sharpen the putting skills of the golfer. Additionally, the ball-receiving copy of the device is designed so that golf balls entering the cup during the practice session will automatically roll outwardly therefrom by force of gravity.
申请公布号 US5857919(A) 申请公布日期 1999.01.12
申请号 US19970876185 申请日期 1997.06.13
申请人 PRINCIPLE PLASTICS 发明人 HOYT, DAVID;ALDCROFT, GARY T.
分类号 A63B57/00;A63B63/00;(IPC1-7):A63B69/36 主分类号 A63B57/00
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