| 发明名称 |
Concrete pipe for drains or sewers, has inside wall with lower region having relatively small radius of curvature |
| 摘要 |
The pipe (1) has an inside wall (4) including a curved section (10) in the lower region of its cross-section which has a radius of curvature of less than 100 mm.
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| 申请公布号 |
NL1021681(C1) |
申请公布日期 |
2004.04.20 |
| 申请号 |
NL20021021681 |
申请日期 |
2002.10.17 |
| 申请人 |
WACO-LIESBOSCH BETON B.V. |
发明人 |
ALOYSIUS GERARDUS MARIA ROGGEKAMP |
| 分类号 |
E03F3/04;F16L9/00;F16L9/08;(IPC1-7):E03F3/04 |
主分类号 |
E03F3/04 |
| 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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