| Number | Name | Date | Kind |
|---|---|---|---|
| 1937843 | Randall | Dec 1933 | A |
| 2374623 | Sale | Apr 1945 | A |
| 3694981 | Cremer et al. | Oct 1972 | A |
| 4318260 | Siegel et al. | Mar 1982 | A |
| 4333290 | Koberstein | Jun 1982 | A |
| 4590727 | Ghahremani et al. | May 1986 | A |
| 5117598 | Livingston et al. | Jun 1992 | A |
| 5214892 | Livingston et al. | Jun 1993 | A |
| 6415575 | Thompson | Jul 2002 | B1 |
| Entry |
|---|
| ASM Handbook Committee, Metals Handbook, 1977 p. 125, 8th Edition. |