Document Type and Number:
Japanese Patent JPS4865806
Kind Code:
U
Application Number:
JP11109171U
Publication Date:
August 21, 1973
Filing Date:
November 29, 1971
Export Citation:
International Classes:
B21B28/02; B21B1/00; C21D1/00; C21D9/38; (IPC1-7): C21D1/00