Title:
杭穴の構築方法
Document Type and Number:
Japanese Patent JP4858878
Kind Code:
B2
Inventors:
Takashi Tatsuguchi
Nobutaka Igarashi
Nobutaka Igarashi
Application Number:
JP2008001828A
Publication Date:
January 18, 2012
Filing Date:
January 09, 2008
Export Citation:
Assignee:
Mitani Sexan Co., Ltd.
International Classes:
E21B44/00; E02D1/02; E02D5/50; E21B7/00; E21B7/30
Domestic Patent References:
| JP2001032274A | ||||
| JP2000120364A | ||||
| JP2000291004A | ||||
| JP6004994B2 | ||||
| JP4026555Y2 |
Attorney, Agent or Firm:
Masatsugu Suzuki
Kenichi Wakui
Norihiro Yamamoto
Kazunaga Suzuki
Kenichi Wakui
Norihiro Yamamoto
Kazunaga Suzuki