Document Type and Number:
Japanese Patent JPS5217472
Kind Code:
Y2
Application Number:
JP1384873U
Publication Date:
April 20, 1977
Filing Date:
January 31, 1973
Export Citation:
International Classes:
B21C37/18; B21C37/15; B21D15/00; B21D19/00; B21D31/06; B21D39/00; B21D41/02; B21D41/04; B21D51/00; B21J5/00; B21J7/16; (IPC1-7): B21C37/15; B21D15/00; B21D19/00; B21D39/00; B21D51/00; B21J5/00