Title:
掘削装置
Document Type and Number:
Japanese Patent JP5155991
Kind Code:
B2
Inventors:
Tanaka Tera
Nobuo Ninohe
Nobuo Ninohe
Application Number:
JP2009279306A
Publication Date:
March 06, 2013
Filing Date:
December 09, 2009
Export Citation:
Assignee:
Avolon System Co., Ltd.
International Classes:
E21B3/02
Domestic Patent References:
| JP3150680U | ||||
| JP54105805A | ||||
| JP2000265769A |
Attorney, Agent or Firm:
Isono Dozo
Etsuo Tada
Etsuo Tada