Title:
削孔装置
Document Type and Number:
Japanese Patent JP4264396
Kind Code:
B2
Inventors:
Junzo Higuchi
Application Number:
JP2004249625A
Publication Date:
May 13, 2009
Filing Date:
August 30, 2004
Export Citation:
Assignee:
Higuchi Engineering Co., Ltd.
International Classes:
E21B10/62
Domestic Patent References:
JP7259090A | ||||
JP2759437B2 | ||||
JP2003184499A |
Attorney, Agent or Firm:
Nobuo Kinutani
Noriyuki Kanasaka
Noriyuki Kanasaka