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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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