发明名称 |
Anordning ved boresystem |
摘要 |
|
申请公布号 |
NO981777(D0) |
申请公布日期 |
1998.04.21 |
申请号 |
NO19980001777 |
申请日期 |
1998.04.21 |
申请人 |
MAEKSVOLD, HARALD |
发明人 |
MAEKSVOLD, HARALD |
分类号 |
E21B;(IPC1-7):E21B |
主分类号 |
E21B |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
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