| 发明名称 |
ROCK DRILLING MACHINE |
| 摘要 |
A rock drilling machine (1) comprising a drilling portion (4) and a string portion (6), and where the rock drilling machine (1) between the drilling portion (4) and the string portion (6) is provided with a steering joint (8). |
| 申请公布号 |
EP2350421(A4) |
申请公布日期 |
2015.11.18 |
| 申请号 |
EP20090758570 |
申请日期 |
2009.05.29 |
| 申请人 |
NORHARD AS |
发明人 |
HAUGHOM, PER, OLAV;HAUGHOM, SIGURD, KJELL |
| 分类号 |
E21B7/04;E21B7/06;E21B7/08;E21B17/02;E21B17/04 |
主分类号 |
E21B7/04 |
| 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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