Title:
Ground drill machine
Document Type and Number:
Japanese Patent JP6231366
Kind Code:
B2
Inventors:
Tokuo Murate
Koji Takayama
Koji Takayama
Application Number:
JP2013254339A
Publication Date:
November 15, 2017
Filing Date:
December 09, 2013
Export Citation:
Assignee:
Nippon Vehicle Manufacturing Co., Ltd.
International Classes:
E21B15/00; E21B7/00
Domestic Patent References:
| JP4022584U | ||||
| JP2008014015A | ||||
| JP50109405U | ||||
| JP2002327588A |
Foreign References:
| US20080075571 |
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office