Document Type and Number:
Japanese Patent JPS5022977
Kind Code:
Y2
Application Number:
JP558871U
Publication Date:
July 11, 1975
Filing Date:
February 05, 1971
Export Citation:
International Classes:
B21B39/14; B21B39/00; B21C1/28; B21H9/00; B21J13/10; C21D1/00; (IPC1-7): B21C1/28; B21B39/00