Document Type and Number:
Japanese Patent JPH0217681
Kind Code:
Y2
Application Number:
JP11370883U
Publication Date:
May 17, 1990
Filing Date:
July 21, 1983
Export Citation:
International Classes:
B21B23/00; B21B19/00; B21B19/02; B21B19/12; (IPC1-7): B21B23/00; B21B19/00
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