| 发明名称 |
Surface maintenance equipment |
| 摘要 |
The present invention provides surface maintenance equipment, such as for sweeping lawns, which includes mechanism for preventing clogging of ducts leading to the fan and/or the hopper.
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| 申请公布号 |
US4355435(A) |
申请公布日期 |
1982.10.26 |
| 申请号 |
US19800186704 |
申请日期 |
1980.09.12 |
| 申请人 |
TENNANT COMPANY |
发明人 |
KIMZEY, PAUL W.;SUPER, DANIEL J. |
| 分类号 |
E01H1/08;(IPC1-7):A47L5/12 |
主分类号 |
E01H1/08 |
| 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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