Document Type and Number:
Japanese Patent JPS5017191
Kind Code:
B1
Application Number:
JP8948170A
Publication Date:
June 19, 1975
Filing Date:
October 12, 1970
Export Citation:
International Classes:
B21C37/15; B21D31/04; B21D41/02; B21D51/16; (IPC1-7): B21D41/02; B21D51/16