Document Type and Number:
Japanese Patent JPH0431771
Kind Code:
B2
Application Number:
JP11164584A
Publication Date:
May 27, 1992
Filing Date:
May 30, 1984
Export Citation:
International Classes:
B21B39/08; B21B1/22; B21D31/00; B21H7/00; B21H8/00
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