Title:
トンネル掘削方法及び鏡止めボルト
Document Type and Number:
Japanese Patent JP4714927
Kind Code:
B2
Inventors:
Hideki Nakamura
Toyoaki Tachibana
Toyoaki Tachibana
Application Number:
JP2007228224A
Publication Date:
July 06, 2011
Filing Date:
September 03, 2007
Export Citation:
Assignee:
Okumura Gumi Co., Ltd.
International Classes:
E21D9/04
Domestic Patent References:
| JP59045074B2 | ||||
| JP2006104695A | ||||
| JP7229399A | ||||
| JP7127388A |
Attorney, Agent or Firm:
Tatsuhiko Sato
Susumu Hori
Takeshi Sagi
Kenichi Homma
Tsuyoshi Kagaya
Susumu Hori
Takeshi Sagi
Kenichi Homma
Tsuyoshi Kagaya