Title:
APPARATUS FOR HOLDING PILLAR PIPE OF UNDERWATER BORING APPARATUS
Document Type and Number:
Japanese Patent JPS5876688
Kind Code:
A
Inventors:
YOSHIMURA NOBUO
Application Number:
JP17343881A
Publication Date:
May 09, 1983
Filing Date:
October 28, 1981
Export Citation:
Assignee:
YOSHIMURA KOGYOSHO KK
International Classes:
E21B7/136; E21B7/12; (IPC1-7): E21B7/12
Attorney, Agent or Firm:
Shogo Ehara