Document Type and Number:
Japanese Patent JPS4874837
Kind Code:
U
Application Number:
JP12158171U
Publication Date:
September 18, 1973
Filing Date:
December 22, 1971
Export Citation:
International Classes:
B21D3/02; B21D7/00; B21D7/08; B21D19/00; B23K37/00; B23K37/04; (IPC1-7): B23K37/04