Document Type and Number:
Japanese Patent JPS5116915
Kind Code:
B1
Application Number:
JP9088570A
Publication Date:
May 28, 1976
Filing Date:
October 15, 1970
Export Citation:
International Classes:
C01G43/025; (IPC1-7): C01G43/02
Foreign References:
| US3168369A | 1965-02-02 | |||
| US3235327A | 1966-02-15 |