| 发明名称 |
Covering for e.g. sewer pits, rainwater or waste water ducts, has plug stopping ventilation opening |
| 摘要 |
<p>A lockable plug stops each ventilation opening (6) of a covering (1), and consists of an elastic seal and a latching extension engageable to the lower edge of the ventilation opening. One type of cap may be formed with a central key slot. An independent claim is also included for a cap.</p> |
| 申请公布号 |
DE202005009759(U1) |
申请公布日期 |
2005.11.10 |
| 申请号 |
DE20052009759U |
申请日期 |
2005.06.22 |
| 申请人 |
BERNHARD AMSBECK GMBH & CO. |
发明人 |
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| 分类号 |
E02D29/14;E03F5/02;(IPC1-7):E02D29/14 |
主分类号 |
E02D29/14 |
| 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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