Title:
The screw joint structure of a drilling tool, and a drilling tool
Document Type and Number:
Japanese Patent JP6136439
Kind Code:
B2
More Like This:
Inventors:
Kazuyoshi Nakamura
Dr. Ota
Dr. Ota
Application Number:
JP2013064851A
Publication Date:
May 31, 2017
Filing Date:
March 26, 2013
Export Citation:
Assignee:
Mitsubishi Materials Corporation
International Classes:
E21B17/042
Domestic Patent References:
JP8219337A | ||||
JP10504077A |
Foreign References:
US6009611 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Hiroshi Masui
Fumihiro Hosokawa
Tadashi Takahashi
Hiroshi Masui
Fumihiro Hosokawa
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