Title:
大深度真空排水・圧密脱水工法と併用する小井戸の排水工法
Document Type and Number:
Japanese Patent JP4280213
Kind Code:
B2
Inventors:
Shigekichi Takahashi
Application Number:
JP2004238899A
Publication Date:
June 17, 2009
Filing Date:
August 18, 2004
Export Citation:
Assignee:
Limited company Asahi Techno
International Classes:
E02D3/10; E02D19/10; E21B43/00
Domestic Patent References:
| JP50153411A | ||||
| JP3280935B2 | ||||
| JP3243501B2 | ||||
| JP5314848B2 | ||||
| JP9222925A | ||||
| JP2001152439A |
Attorney, Agent or Firm:
Masao Isono