| 发明名称 |
Method and device for loosening stony soil |
| 摘要 |
A method for loosening stony soil by means of a rotating cutting head fastened to the rear of a tractor and having cutting members to be drawn through the soil and being mounted according to a helical line.
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| 申请公布号 |
US4162102(A) |
申请公布日期 |
1979.07.24 |
| 申请号 |
US19770798674 |
申请日期 |
1977.05.19 |
| 申请人 |
BALLAST-NEDAM GROEP N V |
发明人 |
ROOYMANS, JOANNES A |
| 分类号 |
E02F3/20;E02F3/06;E02F5/02;E02F5/04;E02F5/14;E02F9/28;(IPC1-7):E02F5/04 |
主分类号 |
E02F3/20 |
| 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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