Document Type and Number:
Japanese Patent JPS5221753
Kind Code:
B2
Application Number:
JP9346072A
Publication Date:
June 13, 1977
Filing Date:
September 18, 1972
Export Citation:
International Classes:
B21C51/00; B21B1/08; B23D33/12; B23D36/00; B23K7/00; B23K7/10; B26D1/14; (IPC1-7): B23D36/00; B21B1/08