Number | Date | Country | Kind |
---|---|---|---|
8105221 | Nov 1981 | NLX |
Number | Name | Date | Kind |
---|---|---|---|
4340208 | Vayssiere et al. | Jul 1982 |
Number | Date | Country |
---|---|---|
849446 | Aug 1970 | CAX |
Entry |
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Newton, "Extractive Metallurgy", John Wiley and Sons, Inc., 1959, pp. _269, 270-271, and 285. |
United States Steel, "The Making, Shaping and Treating of Steel", 1971, _p. 45. |