Title:
回転打撃式削孔装置
Document Type and Number:
Japanese Patent JP4730925
Kind Code:
B2
Inventors:
Kazunori Maeda
Kazuo Kiuchi
Takaaki Kato
Takeda Ikeda
Kazuo Kiuchi
Takaaki Kato
Takeda Ikeda
Application Number:
JP2005182793A
Publication Date:
July 20, 2011
Filing Date:
June 23, 2005
Export Citation:
Assignee:
Okabe Co., Ltd.
Nittetsu Sumikin Building Materials Co., Ltd.
Nittetsu Sumikin Building Materials Co., Ltd.
International Classes:
E21B4/14; E21B6/00
Domestic Patent References:
| JP49126501A | ||||
| JP6323078A |
Attorney, Agent or Firm:
Eiichi Fukushima