Title:
【発明の名称】鋼管配設孔形成装置及び鋼管矢板形成方法
Document Type and Number:
Japanese Patent JP2972853
Kind Code:
B2
Inventors:
SAKURADA MINORU
CHONISHI YOSHIFUMI
CHONISHI YOSHIFUMI
Application Number:
JP28903396A
Publication Date:
November 08, 1999
Filing Date:
October 14, 1996
Export Citation:
Assignee:
ASAHI ENJINIARINGU KK
International Classes:
E21B3/02; E02D5/08; E02D5/20; E02D5/28; E21B7/00; E21B7/20; (IPC1-7): E21B7/20; E02D5/20
Domestic Patent References:
| JP51144303A |
Attorney, Agent or Firm:
Seiichi Sawaki (1 outside)