Title:
【考案の名称】ハイドロフレーズ掘削機におけるカッターティースの取付用ブレード
Document Type and Number:
Japanese Patent JP2536963
Kind Code:
Y2
Inventors:
Nakamura Toshio
Application Number:
JP7870490U
Publication Date:
May 28, 1997
Filing Date:
July 26, 1990
Export Citation:
Assignee:
Obayashi Corporation
International Classes:
E21B10/00; E02D17/13; E02F5/02; (IPC1-7): E02F5/02
Domestic Patent References:
| JP258043U |
Attorney, Agent or Firm:
Kensuke Isshiki (1 person outside)