Document Type and Number:
Japanese Patent JPS5077971
Kind Code:
A
Application Number:
JP11479874A
Publication Date:
June 25, 1975
Filing Date:
October 07, 1974
Export Citation:
International Classes:
B21D55/00; B21D28/20; B23D33/00; B30B15/28; (IPC1-7): B26F1/00; B30B15/02