发明名称 |
Cast-iron manhole-cover structure, has spring component formed of steel material as separate piece, and pushed into grooves formed in plate-like cover component, to hold cover component in its installed position |
摘要 |
The structure has spring component (2) formed of steel material as a separate piece, and pushed into grooves (6) formed in a plate-like cover component (1) to hold the cover component in its installed position. |
申请公布号 |
FI117763(B) |
申请公布日期 |
2007.02.15 |
申请号 |
FI20050001344 |
申请日期 |
2005.12.30 |
申请人 |
SUUNNITTELUTOIMISTO BESTDAN OY, |
发明人 |
LEHTONEN,ERKKI |
分类号 |
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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