| 发明名称 |
DUAL PIPE ROD ASSEMBLY SECTION, HORIZONTAL DRILLING DEVICE AND PROBE HOUSING |
| 摘要 |
A dual pipe rod assembly section includes an inner rod section and an outer rod section, with a probe which is arranged in the dual pipe rod assembly section, a horizontal drilling device and a probe housing. The probe is arranged in the inner rod section and rotationally coupled to the outer rod section.
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| 申请公布号 |
US2013140087(A1) |
申请公布日期 |
2013.06.06 |
| 申请号 |
US201213485251 |
申请日期 |
2012.05.31 |
| 申请人 |
KOCH ELMAR;FISCHER SEBASTIAN;TRACTO-TECHNIK GMBH & CO. KG |
发明人 |
KOCH ELMAR;FISCHER SEBASTIAN |
| 分类号 |
E21B17/18;E21B47/01 |
主分类号 |
E21B17/18 |
| 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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