Title:
鋼管類圧入引抜装置
Document Type and Number:
Japanese Patent JP5665568
Kind Code:
B2
Inventors:
山口 哲生
Application Number:
JP2011015213A
Publication Date:
February 04, 2015
Filing Date:
January 27, 2011
Export Citation:
Assignee:
協和機工株式会社
International Classes:
E02D11/00; E02D7/20; E21B7/20
Attorney, Agent or Firm:
Yamasaki 宏
Mitsuo Tanaka
Koji Maeda
Front ditch Yoshiyuki
Mitsuo Tanaka
Koji Maeda
Front ditch Yoshiyuki