Title:
竪穴深度掘削における掘削先端位置計測システムおよびそれを用いた計測方法
Document Type and Number:
Japanese Patent JP4230400
Kind Code:
B2
More Like This:
Inventors:
Kimiaki Sasaki
Shogo Kamoshita
Mineyuki Asahina
Watanabe Gen
Shogo Kamoshita
Mineyuki Asahina
Watanabe Gen
Application Number:
JP2004099653A
Publication Date:
February 25, 2009
Filing Date:
March 30, 2004
Export Citation:
Assignee:
Railway Technical Research Institute
JR Research Institute, Inc. Information System
JR Research Institute, Inc. Information System
International Classes:
E21D1/00; G01C15/00; E21D9/06
Domestic Patent References:
| JP10288522A | ||||
| JP3082834U | ||||
| JP7189590A |
Attorney, Agent or Firm:
Mamoru Shimizu
Makoto Kawai
Makoto Kawai