发明名称 |
Surface Marking System for Competitive Throwing and Training |
摘要 |
A marking system for use with competitively thrown objects such as discuses, shot puts, hammers and javelins. The marking system has a cavity which contains a marking agent which is automatically deposited from the cavity onto the ground when the thrown object hits the ground. Other embodiments are describes and shown. |
申请公布号 |
US2013085019(A1) |
申请公布日期 |
2013.04.04 |
申请号 |
US201213585845 |
申请日期 |
2012.08.15 |
申请人 |
HUDACK, III LAWRENCE JOSEPH |
发明人 |
HUDACK, III LAWRENCE JOSEPH |
分类号 |
A63B67/00;A63B65/00 |
主分类号 |
A63B67/00 |
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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