Title:
Digging device
Document Type and Number:
Japanese Patent JP5939688
Kind Code:
B2
Inventors:
Hiroshige Takano
Application Number:
JP2013035205A
Publication Date:
June 22, 2016
Filing Date:
February 25, 2013
Export Citation:
Assignee:
Kochi Marutaka Co., Ltd.
International Classes:
E21B6/04
Domestic Patent References:
| JP9060462A | ||||
| JP2013028983A | ||||
| JP2009121128A | ||||
| JP2002275892A |
Attorney, Agent or Firm:
Kazuhiro Kiyohara