发明名称 Method for using a home plate tape measure
摘要 A pitching assistance device resembles a home plate with a coiled measuring element stored therein. The measuring element may be selectively extended from the home plate structure to measure off a predefined distance, such as the regulation distance between a pitching mound and a home plate. Once measured, the distance may then be used by a pitcher for warming up or the creation of an improvised bullpen.
申请公布号 US2005221922(A1) 申请公布日期 2005.10.06
申请号 US20050129826 申请日期 2005.05.16
申请人 RATHBUN RUTH E;RATHBUN WILLIAM J 发明人 RATHBUN RUTH E.;RATHBUN WILLIAM J.
分类号 A63B69/00;(IPC1-7):A63B71/00 主分类号 A63B69/00
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