Title:
さく孔機のガイドシェル
Document Type and Number:
Japanese Patent JP4026713
Kind Code:
B2
Inventors:
Toshiaki Yoshii
Application Number:
JP2003125750A
Publication Date:
December 26, 2007
Filing Date:
April 30, 2003
Export Citation:
Assignee:
Furukawa Metal Co., Ltd.
International Classes:
E21B7/02; E21B19/24
Domestic Patent References:
| JP11502908A | ||||
| JP3084496U | ||||
| JP11050554A | ||||
| JP57105388U | ||||
| JP9502232A | ||||
| JP60233290A |
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Cui Shu Tetsu
Tadayuki Miyazaki
Yoshiaki Naito
Cui Shu Tetsu
Tadayuki Miyazaki