Title:
掘削システムおよび掘削方法
Document Type and Number:
Japanese Patent JP5513228
Kind Code:
B2
Inventors:
Koji Kida
Shinichi Yamashita
Shinichi Yamashita
Application Number:
JP2010091448A
Publication Date:
June 04, 2014
Filing Date:
April 12, 2010
Export Citation:
Assignee:
Kida Shiki Kogyo Co., Ltd.
Toa Construction Industry Co., Ltd.
Toa Construction Industry Co., Ltd.
International Classes:
E21B6/00; E21B3/04; E21D1/06
Domestic Patent References:
| JP2002256788A | ||||
| JP2136489A |
Attorney, Agent or Firm:
Shinichi Ogawa
Takashi Noguchi
Kenji Sato
Takayoshi in the daytime
Isao Hirai
Masao Sakaizawa
Kazuhiko Saishita
Takashi Noguchi
Kenji Sato
Takayoshi in the daytime
Isao Hirai
Masao Sakaizawa
Kazuhiko Saishita