发明名称 |
Water drainage system for a field having a water impermeable layer |
摘要 |
The tubular element is made with a sleeve formed of a spun bonded polyester material that allows the passage of water and prevents the passage of soil when used for a drainage element. The tubular element is made with small diameters that allows the element to be coiled about a three-dimensional object when used as a cushioning device.
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申请公布号 |
US7811030(B2) |
申请公布日期 |
2010.10.12 |
申请号 |
US20090459549 |
申请日期 |
2009.07.02 |
申请人 |
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发明人 |
BUSSEY, JR. HARRY;BUSSEY, III BUDDY HARRY |
分类号 |
E02B11/00 |
主分类号 |
E02B11/00 |
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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