Document Type and Number:
Japanese Patent JPS5519601
Kind Code:
Y2
Application Number:
JP462278U
Publication Date:
May 10, 1980
Filing Date:
January 20, 1978
Export Citation:
International Classes:
B21C3/02; B21C1/24; B21C3/00; B21C3/12; (IPC1-7): B21C3/12; B21C1/24