Title:
岩盤削孔装置および岩盤削孔方法
Document Type and Number:
Japanese Patent JP5580222
Kind Code:
B2
Inventors:
Tatsuya Noma
Toshiro Tsuchiya
Asanuma 廉樹
Toshiro Tsuchiya
Asanuma 廉樹
Application Number:
JP2011026662A
Publication Date:
August 27, 2014
Filing Date:
February 10, 2011
Export Citation:
Assignee:
Fujita Corp.
International Classes:
E21B19/24; E21B7/02
Attorney, Agent or Firm:
Noda 茂