Title:
杭穴掘削方法、杭穴掘削ロッド
Document Type and Number:
Japanese Patent JP6567327
Kind Code:
B2
Inventors:
Yoshinobu Kitani
Application Number:
JP2015108113A
Publication Date:
August 28, 2019
Filing Date:
May 28, 2015
Export Citation:
Assignee:
Mitani Sexan Co., Ltd.
International Classes:
E02D5/34; E21B17/10
Domestic Patent References:
| JP2004353303A | ||||
| JP2002097636A | ||||
| JP2002317594A | ||||
| JP2015096676A | ||||
| JP2005054437A | ||||
| JP2015014107A | ||||
| JP2007315027A |
Foreign References:
| US20100263929 |
Attorney, Agent or Firm:
Kenichi Wakui
Norihiro Yamamoto
Kazunaga Suzuki
Takahiro Kudo
Naoto Mitsui
Norihiro Yamamoto
Kazunaga Suzuki
Takahiro Kudo
Naoto Mitsui