发明名称 |
A DRAINAGE DEVICE |
摘要 |
Drainage devices for sub-terranean drainage, the devices comprising a core (2) of cuspated plastics sheet material covered by a web (12) of geotextile. The devices are made in sheet or strip form and specific examples of applications are disclosed. Methods of manufacture of the devices in sheet and strip form are disclosed. |
申请公布号 |
WO8302790(A1) |
申请公布日期 |
1983.08.18 |
申请号 |
WO1983AU00017 |
申请日期 |
1983.02.03 |
申请人 |
NYLEX CORPORATION LIMITED |
发明人 |
GEMMELL, DANIEL, PATERSON |
分类号 |
E02B11/00;E02D3/10;E02D11/00;(IPC1-7):02D11/00;02D3/10 |
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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