发明名称 Golf putt improvement system
摘要 A golf practice system is provided including a supporting surface having at least one set of concentric rings. Also included is a base positioned on the supporting surface in spaced relationship with the concentric rings.
申请公布号 US6248022(B1) 申请公布日期 2001.06.19
申请号 US19990328992 申请日期 1999.06.10
申请人 STEYN CORNELIUS PETRUS 发明人 STEYN CORNELIUS PETRUS
分类号 A63B63/00;A63B67/02;A63B69/00;A63B69/36;(IPC1-7):A63B67/02 主分类号 A63B63/00
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