Document Type and Number:
Japanese Patent JPS632177
Kind Code:
Y2
Application Number:
JP12289779U
Publication Date:
January 20, 1988
Filing Date:
September 05, 1979
Export Citation:
International Classes:
B21D28/32; B21D28/02; B21D31/04; (IPC1-7): B21D28/32; B21D28/02; B21D31/04
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