Document Type and Number:
Japanese Patent JPS5019005
Kind Code:
Y2
Application Number:
JP2312871U
Publication Date:
June 10, 1975
Filing Date:
April 01, 1971
Export Citation:
International Classes:
B21C37/28; B21D7/00; B21D7/16; B21D9/00; B21D9/18; (IPC1-7): B21D9/18