Title:
掘削装置及び掘削方法
Document Type and Number:
Japanese Patent JP5371671
Kind Code:
B2
Inventors:
Seio Kitamura
Wataru Takahashi
Wataru Takahashi
Application Number:
JP2009232082A
Publication Date:
December 18, 2013
Filing Date:
October 06, 2009
Export Citation:
Assignee:
Giken Co., Ltd.
International Classes:
E21B7/00; E02D7/20; E02D7/28; E02D11/00; E21B12/00
Domestic Patent References:
| JP8338021A | ||||
| JP11280366A | ||||
| JP2000204865A | ||||
| JP2004092324A | ||||
| JP5022687U |
Attorney, Agent or Firm:
Hiroshi Arafune