Document Type and Number:
Japanese Patent JPS52141048
Kind Code:
U
Application Number:
JP4809876U
Publication Date:
October 26, 1977
Filing Date:
April 19, 1976
Export Citation:
International Classes:
B21D51/16; B21D3/14; B21D3/16; (IPC1-7): B21D3/16; F16L9/20