Document Type and Number:
Japanese Patent JPH0222085
Kind Code:
Y2
Application Number:
JP9000286U
Publication Date:
June 14, 1990
Filing Date:
June 12, 1986
Export Citation:
International Classes:
B21C23/21; B21C23/10; B21C25/02; B21C25/04; (IPC1-7): B21C25/02; B21C23/21