Title:
【発明の名称】自在掘削断面シールド掘削方法およびシールド掘削装置
Document Type and Number:
Japanese Patent JP2926343
Kind Code:
B2
Inventors:
NAKAMURA KOICHIRO
YOSHIKAWA YOSHASU
YOSHIKAWA YOSHASU
Application Number:
JP30247989A
Publication Date:
July 28, 1999
Filing Date:
November 21, 1989
Export Citation:
Assignee:
KYOWA EKUSHIO KK
International Classes:
E21D9/087; E21D9/08; (IPC1-7): E21D9/08
Domestic Patent References:
| JP1163395A | ||||
| JP1310093A |
Attorney, Agent or Firm:
Yuichi Murakami (1 outside)