| 发明名称 |
Collector pipe and sewer pipe in which it is possible to walk |
| 摘要 |
According to the invention, collector and sewer pipes in which it is possible to walk are formed from a flexible inner through-pipe consisting of plastic of a small wall thickness and from a movable concrete outer pipe which comprises a number of members and absorbs the mechanical forces of earth movement.
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| 申请公布号 |
DE3838239(A1) |
申请公布日期 |
1990.03.15 |
| 申请号 |
DE19883838239 |
申请日期 |
1988.11.11 |
| 申请人 |
NIEDERBERG-CHEMIE GMBH, 4133 NEUKIRCHEN-VLUYN, DE |
发明人 |
TEILNICHTNENNUNG DES ERFINDERS BEANTRAGT |
| 分类号 |
B09B1/00;E02D31/00;E03F3/04 |
主分类号 |
B09B1/00 |
| 代理机构 |
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