Title:
立孔掘削装置とこれを用いた立孔構築方法および下部推進体
Document Type and Number:
Japanese Patent JP4526018
Kind Code:
B2
Inventors:
Kazuo Shibata
Yasushi Nakamura
Yasushi Nakamura
Application Number:
JP2004185320A
Publication Date:
August 18, 2010
Filing Date:
June 23, 2004
Export Citation:
Assignee:
Nisshin Techno Co., Ltd.
Nippon Steel Engineering Co., Ltd.
Nippon Steel Engineering Co., Ltd.
International Classes:
E21B10/00; E21B6/04
Domestic Patent References:
| JP2003184078A | ||||
| JP11181761A | ||||
| JP2003148079A | ||||
| JP8270353A |
Attorney, Agent or Firm:
Nobuyuki Hayashi
Yasuhiko
Yasuhiko