Title:
破砕削孔装置
Document Type and Number:
Japanese Patent JP4533910
Kind Code:
B2
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Inventors:
Mitsumi Bandai
Application Number:
JP2007122545A
Publication Date:
September 01, 2010
Filing Date:
May 07, 2007
Export Citation:
Assignee:
Mandai crane Co., Ltd.
International Classes:
E21B6/08; E21B4/14
Domestic Patent References:
| JP59034392A | ||||
| JP2002295158A | ||||
| JP2002339680A | ||||
| JP2001003363A | ||||
| JP6063694U | ||||
| JP2007002485A |
Attorney, Agent or Firm:
Hiroshi Ohama