Document Type and Number:
Japanese Patent JPS631121
Kind Code:
B2
Inventors:
MASUDA MITSURU
HAYASHI CHIHIRO
HAYASHI CHIHIRO
Application Number:
JP7020882A
Publication Date:
January 11, 1988
Filing Date:
April 28, 1982
Export Citation:
Assignee:
SUMITOMO METAL IND
International Classes:
B21B1/16; B21B1/18; B21B31/02; B21B35/10; B21B39/06
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