Title:
A perpendicular hole excavating method and a perpendicular hole drilling device
Document Type and Number:
Japanese Patent JP6006138
Kind Code:
B2
Inventors:
Akira Miyata
Kojiro Takei
Fujishima Taisuke
Ishii Sadami
Hideki Tanaka
Masaaki Kato
Junichiro Otsubo
Kojiro Takei
Fujishima Taisuke
Ishii Sadami
Hideki Tanaka
Masaaki Kato
Junichiro Otsubo
Application Number:
JP2013029347A
Publication Date:
October 12, 2016
Filing Date:
February 18, 2013
Export Citation:
Assignee:
Kashima Construction Co., Ltd.
International Classes:
E21B3/00; E02D5/46
Domestic Patent References:
| JP2014114600A | ||||
| JP11336060A | ||||
| JP2183011A | ||||
| JP52154206A | ||||
| JP2009235676A | ||||
| JP54132403A | ||||
| JP2011132667A | ||||
| JP53109883A |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Hiroshi Kondo
Yoshiki Kuroki
Hiroshi Kondo