Document Type and Number:
Japanese Patent JPS5695431
Kind Code:
U
Application Number:
JP17558279U
Publication Date:
July 29, 1981
Filing Date:
December 20, 1979
Export Citation:
International Classes:
B21D28/04; B21D28/14; B21D28/34; (IPC1-7): B21D28/34; B21D28/04