掘削工具および掘削工法 - Mitsubishi Materials Corporation

Title:

掘削工具および掘削工法

Document Type and Number:

Japanese Patent JP4061874

Kind Code:

B2

More Like This:

JP5259689	Excavator magnifying head switchgear
JP2005240282	INNER EXCAVATION TIP ENLARGED FOOT PROTECTION METHOD OF FOUNDATION HOLLOW PILE AND APPARATUS

Inventors:

Takeshi Hayashi
Hitoya Hisada

Application Number:

JP2001294383A

Publication Date:

March 19, 2008

Filing Date:

September 26, 2001

Export Citation:

Assignee:

Mitsubishi Materials Corporation

International Classes:

E21B10/32; E21B3/00

Domestic Patent References:

JP9060467A
JP2001107674A

Attorney, Agent or Firm:

Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama

Previous Patent: 成形回路基板の切断方法及び成形回路基板の切断装置

Next Patent: 液晶注入方法