Title:
可撓式ビットを用いた全地盤掘削装置
Document Type and Number:
Japanese Patent JP4367817
Kind Code:
B2
Inventors:
Shimai Moriyuki
Application Number:
JP2000204517A
Publication Date:
November 18, 2009
Filing Date:
July 06, 2000
Export Citation:
Assignee:
Kashima Construction Co., Ltd.
International Classes:
E21B7/28; E21B7/30
Domestic Patent References:
| JP10317376A | ||||
| JP2144412A | ||||
| JP8260888A | ||||
| JP10153077A |
Attorney, Agent or Firm:
Toshitada Takahashi
Toshikuni Takahashi
Toshikuni Takahashi