Title:
自由形状掘削シールド機
Document Type and Number:
Japanese Patent JP4272316
Kind Code:
B2
Inventors:
Toru Watanabe
Keiichi Miyazaki
Keiichi Miyazaki
Application Number:
JP29871899A
Publication Date:
June 03, 2009
Filing Date:
October 20, 1999
Export Citation:
Assignee:
Nishimatsu Construction Co., Ltd.
International Classes:
E21D9/087; E21D9/08
Domestic Patent References:
| JP2024486A | ||||
| JP1295992A | ||||
| JP1163395A | ||||
| JP2217594A |
Attorney, Agent or Firm:
Hiroshi Arafune
Yoshio Arafune
Yoshio Arafune