Title:
掘削方法及び装置
Document Type and Number:
Japanese Patent JP4553284
Kind Code:
B2
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Inventors:
Mitsuhiro Shibasaki
Application Number:
JP2001087779A
Publication Date:
September 29, 2010
Filing Date:
March 26, 2001
Export Citation:
Assignee:
Chemical Grout Co., Ltd.
International Classes:
E21B7/00; E02D3/12; E21B10/18; E21D9/08; E21D9/087
Domestic Patent References:
| JP6304805A | ||||
| JP53028001A | ||||
| JP1158196A | ||||
| JP7102886A | ||||
| JP4281995A |
Attorney, Agent or Firm:
Toshitada Takahashi
Toshikuni Takahashi
Toshikuni Takahashi