Title:
【発明の名称】セグメントの真円保持装置
Document Type and Number:
Japanese Patent JP2581167
Kind Code:
B2
Inventors:
OOTSUKA RYUSABURO
MAEDA KEIJI
MAEDA KEIJI
Application Number:
JP14985888A
Publication Date:
February 12, 1997
Filing Date:
June 17, 1988
Export Citation:
Assignee:
ISHIKAWAJIMA HARIMA HEAVY IND
International Classes:
E21D11/08; E21D11/40; (IPC1-7): E21D11/40; E21D11/08
Attorney, Agent or Firm:
Tsunemitsu Yamada (1 person outside)