| Number | Name | Date | Kind |
|---|---|---|---|
| D165034 | Van Sciver | Oct 1951 | |
| D262606 | Kaufmann | Jan 1982 | |
| D294114 | Beck | Feb 1988 | |
| D327009 | Poore | Jun 1992 | |
| D337259 | Curtis et al. | Jul 1993 | |
| 1990560 | Mock | Feb 1935 | |
| 4038667 | Hou et al. | Jul 1977 | |
| 4061247 | Meshberg | Dec 1977 | |
| 4215352 | Corwin | Jul 1980 | |
| 5301838 | Schmidt et al. | Apr 1994 |