Title:
ボーリング方法及びボーリング装置
Document Type and Number:
Japanese Patent JP5520643
Kind Code:
B2
Inventors:
Komiya Kunimori
Dr. Tamagawa
Dr. Tamagawa
Application Number:
JP2010059742A
Publication Date:
June 11, 2014
Filing Date:
March 16, 2010
Export Citation:
Assignee:
Hi-Tech Co., Ltd.
West Japan Expressway Engineering Kansai Co., Ltd.
West Japan Expressway Engineering Kansai Co., Ltd.
International Classes:
E21B19/02; E02D1/04; E21B15/04; E21B25/00; G01N1/08
Domestic Patent References:
JP3101398U | ||||
JP1278684A | ||||
JP2004092205A |
Attorney, Agent or Firm:
Nobumichi Miyata
Masao Yamakawa
Masao Yamakawa