Document Type and Number:
Japanese Patent JPS63157431
Kind Code:
U
Application Number:
JP4875787U
Publication Date:
October 14, 1988
Filing Date:
March 31, 1987
Export Citation:
International Classes:
B21D37/14; B21D28/34; B26F1/14; (IPC1-7): B21D28/34; B21D37/14; B26F1/14