Document Type and Number:
Japanese Patent JPH0571321
Kind Code:
B2
Inventors:
TOMIMATSU KATSUFUMI
Application Number:
JP24408687A
Publication Date:
October 07, 1993
Filing Date:
September 30, 1987
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B21B23/00; B21B19/04; (IPC1-7): B21B19/04; B21B23/00
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