Title:
【発明の名称】継目無金属管の製造法
Document Type and Number:
Japanese Patent JPS5937687
Kind Code:
B2
Inventors:
YOSHIHARA SEISHIRO
HIGASHAMA HIROKICHI
HIGASHAMA HIROKICHI
Application Number:
JP5849979A
Publication Date:
September 11, 1984
Filing Date:
May 12, 1979
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B21B23/00; B21B19/02; (IPC1-7): B21B23/00
Attorney, Agent or Firm:
Shiro Mitsuishi