Document Type and Number:
Japanese Patent JPS54152245
Kind Code:
U
Application Number:
JP4943278U
Publication Date:
October 23, 1979
Filing Date:
April 17, 1978
Export Citation:
International Classes:
B21C23/21; B21C23/04; B21D3/02; (IPC1-7): B21C23/04; B21D3/02