Title:
掘削工具
Document Type and Number:
Japanese Patent JP3750516
Kind Code:
B2
Inventors:
Kazuo Fujimound
Hitoya Hisada
Kazuyoshi Yoshida
Hitoya Hisada
Kazuyoshi Yoshida
Application Number:
JP2000356323A
Publication Date:
March 01, 2006
Filing Date:
November 22, 2000
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
E21B10/36; E21B17/16; E21B7/20
Domestic Patent References:
| JP51151603A | ||||
| JP50001857Y1 | ||||
| JP2001032664A | ||||
| JP10205260A |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama