Number | Name | Date | Kind |
---|---|---|---|
1113778 | Gray | Oct 1914 | |
1127475 | Marshall | Feb 1915 | |
1206057 | Eckermann et al. | Nov 1916 | |
3539695 | Klee et al. | Nov 1970 |
Number | Date | Country |
---|---|---|
677279 | Jun 1939 | DE2 |
1937839 | Jul 1969 | DEX |
2535207 | Feb 1977 | DEX |
139796 | Sep 1977 | NOX |
Entry |
---|
"Technische Rundschau", (Technical Review), Bern No. 48, Nov. 1978, pp. 21 to 23. |
Article by Dr. Eng. Mollenkamp and Dr. Eng. Kallfelz, "Modern Electro-Reduction Furnaces for Obtaining Ferro Alloys, Crude Iron, and Calcium Carbide, Electro Heat Int'l., " vol. 8, 2/72. |
Metallurgy of the Ferro-Alloys by Durrer/Volkert, vol. 2, Springer Publishing Co., Berlin 1972. |