Document Type and Number:
Japanese Patent JPS6160899
Kind Code:
B2
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Inventors:
OOMURA SEIJI
YOSHIMOTO NORIKATSU
YOSHIMOTO NORIKATSU
Application Number:
JP3521681A
Publication Date:
December 23, 1986
Filing Date:
March 13, 1981
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
C21D9/56