Title:
掘削装置
Document Type and Number:
Japanese Patent JP4485098
Kind Code:
B2
Inventors:
Shimai Moriyuki
Application Number:
JP2001151333A
Publication Date:
June 16, 2010
Filing Date:
May 21, 2001
Export Citation:
Assignee:
Kashima Construction Co., Ltd.
International Classes:
E21B3/02; E21B3/025
Domestic Patent References:
| JP60088780A | ||||
| JP8158773A | ||||
| JP11062463A | ||||
| JP2000186485A | ||||
| JP54054402A | ||||
| JP7247782A | ||||
| JP10299372A | ||||
| JP61180289U |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Shiro Terasaki
Tomoya Kurokawa
Hikaru Suzuki
Shiro Terasaki
Tomoya Kurokawa
Hikaru Suzuki