Document Type and Number:
Japanese Patent JPS4921948
Kind Code:
A
Application Number:
JP6114472A
Publication Date:
February 26, 1974
Filing Date:
June 19, 1972
Export Citation:
International Classes:
C22B17/00; C01B31/08; C02F1/70; C22B3/00; C22B3/24; C22B15/00; C22B43/00; (IPC1-7): C02C5/02