Title:
【発明の名称】立坑構築工法
Document Type and Number:
Japanese Patent JP2874906
Kind Code:
B2
Inventors:
IWATA MITSUAKI
Application Number:
JP21660989A
Publication Date:
March 24, 1999
Filing Date:
August 23, 1989
Export Citation:
Assignee:
KYOWA EKUSHIO KK
International Classes:
E02D19/06; E02D19/16; E02D23/00; E02D23/02; E02D23/08; E21D1/08; (IPC1-7): E21D1/08; E02D23/08
Domestic Patent References:
| JP51121910A | ||||
| JP6272820A | ||||
| JP62284824A |
Attorney, Agent or Firm:
Yuichi Murakami (1 outside)