Document Type and Number:
Japanese Patent JPS5634856
Kind Code:
Y2
Application Number:
JP16285377U
Publication Date:
August 17, 1981
Filing Date:
December 06, 1977
Export Citation:
International Classes:
B21C37/08; B23K9/025; B23K37/02; (IPC1-7): B23K9/225; B23K31/06; B23K37/02