Document Type and Number:
Japanese Patent JPS6242682
Kind Code:
B2
Inventors:
YOSHIHARA SEISHIRO
HIGASHAMA HIROKICHI
HIGASHAMA HIROKICHI
Application Number:
JP914679A
Publication Date:
September 09, 1987
Filing Date:
January 31, 1979
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B21B23/00; B21B19/06
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