| 发明名称 |
Rake for baseball and softball fields |
| 摘要 |
A rake for softball and baseball infields and baselines which smooths the surface after each game without leaving any tracks. The rake may be pulled by hand or by a lightweight tractor.
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| 申请公布号 |
US4704852(A) |
申请公布日期 |
1987.11.10 |
| 申请号 |
US19850790160 |
申请日期 |
1985.10.22 |
| 申请人 |
KNAPP, RICHARD W. |
发明人 |
KNAPP, RICHARD W. |
| 分类号 |
A01D7/00;(IPC1-7):A01D7/00 |
主分类号 |
A01D7/00 |
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代理人 |
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