Number | Name | Date | Kind |
---|---|---|---|
1457877 | Doty | Jun 1923 | |
1578687 | Sperr, Sr. | Mar 1926 | |
2649404 | Reynolds | Aug 1953 | |
2710663 | Wilson | Jun 1955 | |
2810450 | Hartmann | Oct 1957 | |
3000693 | Schulte | Sep 1961 | |
3020138 | Wethley | Feb 1962 | |
3342723 | Godar | Sep 1967 | |
3451896 | Schon | Jun 1969 | |
3581472 | Grosick | Jun 1971 | |
3607047 | Broom | Sep 1971 | |
4001347 | Gosick | Jan 1977 | |
4154584 | Ulrich | May 1979 |
Entry |
---|
Making, Shaping & Treating of Steel, sixth edition, 6/52, J. M. Camp, C. B. Francis, published by U. S. Steel, pp. 248-252. |
Chemical Abstracts, vol. 80, 1974, No. 39137b. |