Document Type and Number:
Japanese Patent JPS57121665
Kind Code:
U
Application Number:
JP822081U
Publication Date:
July 28, 1982
Filing Date:
January 23, 1981
Export Citation:
International Classes:
G04D3/00; C21D1/00; C21D1/18; C21D1/62; (IPC1-7): C21D1/62; C21D1/00; G04D3/00