Title:
【発明の名称】地盤掘削方法及びその装置
Document Type and Number:
Japanese Patent JP2909006
Kind Code:
B2
Inventors:
KUNITO MITSUHIRO
TAZAKI YASUAKI
TAZAKI YASUAKI
Application Number:
JP20491395A
Publication Date:
June 23, 1999
Filing Date:
August 10, 1995
Export Citation:
Assignee:
SEIKO KOGYO KK
International Classes:
E21B3/02; E21B15/00; (IPC1-7): E21B15/00; E21B3/02
Domestic Patent References:
| JP2236289A |
Attorney, Agent or Firm:
Keisei Nishikawa (1 person outside)