Title:
掘削用ロッドの振れ止め装置及びこの装置を使用した掘削工法
Document Type and Number:
Japanese Patent JP4655284
Kind Code:
B2
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Inventors:
Kazuo Hara
Kazuhide Takasu
Kazuhide Takasu
Application Number:
JP2006175485A
Publication Date:
March 23, 2011
Filing Date:
June 26, 2006
Export Citation:
Assignee:
Fujimura Hume Tube Co., Ltd.
International Classes:
E21B17/10; E21B15/00; E21B17/00
Domestic Patent References:
| JP2002242181A | ||||
| JP61169151U | ||||
| JP59170395A | ||||
| JP2006009299A |
Attorney, Agent or Firm:
Kazutoyo Watanabe