Title:
Digging device
Document Type and Number:
Japanese Patent JP6105892
Kind Code:
B2
Inventors:
Kenichi Abe
Application Number:
JP2012227926A
Publication Date:
March 29, 2017
Filing Date:
October 15, 2012
Export Citation:
Assignee:
Hoei Sangyo Co., Ltd.
International Classes:
E21B7/20; E21B11/00
Domestic Patent References:
| JP63019328A | ||||
| JP28001308Y1 | ||||
| JP11324548A | ||||
| JP2001317282A |
Attorney, Agent or Firm:
Satoshi Takeshima
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