Number | Date | Country | Kind |
---|---|---|---|
8035134 | Oct 1980 | GBX | |
8035417 | Nov 1980 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
3589892 | Peterson | Jun 1971 | |
3988148 | Queneau | Oct 1976 |
Number | Date | Country |
---|---|---|
503446 | Jun 1954 | CAX |
934968 | Oct 1973 | CAX |
Entry |
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Yannopoulos, "Extractive Metallurgy of Copper," vol. I, pp. 439-457, AIME, (1967). |
Melcher, "The KIVCET Cyclone Smelting Process for Impure Copper Concentrates", JOM; pp. 4-32, (7/1976). |