| 发明名称 |
Laser beam strike zone indicator |
| 摘要 |
A laser beam strike zone indicator including a home plate. A plurality of adjustable laser beams are directed upwardly from the home plate to define a strike zone for a height of a predetermined batter.
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| 申请公布号 |
US5676607(A) |
申请公布日期 |
1997.10.14 |
| 申请号 |
US19960747250 |
申请日期 |
1996.11.18 |
| 申请人 |
STUMPF, ERNEST A. |
发明人 |
STUMPF, ERNEST A. |
| 分类号 |
A63B69/00;A63B71/06;(IPC1-7):A63B71/02 |
主分类号 |
A63B69/00 |
| 代理机构 |
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代理人 |
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