Title:
【発明の名称】トンネル急速施工方法とその掘削装置
Document Type and Number:
Japanese Patent JP2573882
Kind Code:
B2
Inventors:
OKAMURA MITSUMASA
ISHIGAKI KAZUAKI
ISHIGAKI KAZUAKI
Application Number:
JP8092090A
Publication Date:
January 22, 1997
Filing Date:
March 30, 1990
Export Citation:
Assignee:
TODA CONSTRUCTION
International Classes:
E21D9/08; E21D9/12; E21D11/10; (IPC1-7): E21D9/08; E21D9/12; E21D11/10
Domestic Patent References:
| JP62284833A | ||||
| JP62153499A | ||||
| JP197798U | ||||
| JP5438115Y2 |
Attorney, Agent or Firm:
Sasaki Isao