Document Type and Number:
Japanese Patent JPS646966
Kind Code:
Y2
Application Number:
JP7279480U
Publication Date:
February 23, 1989
Filing Date:
May 24, 1980
Export Citation:
International Classes:
B21C23/21; B21C25/00; B21C25/02; B21C26/00; (IPC1-7): B21C23/21; B21C25/00; B21C26/00
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