| Number | Name | Date | Kind |
|---|---|---|---|
| D123762 | Pieper | Dec 1940 | |
| D123768 | Scribner | Dec 1940 | |
| D286916 | Worrell | Nov 1986 | |
| D359374 | Weinstock | Jun 1995 | |
| D384762 | Roorda | Oct 1997 | |
| 2422280 | Abernathy | Jun 1947 | |
| 3247368 | McHugh | Apr 1966 | |
| 3911265 | Landrum et al. | Oct 1975 | |
| 4344111 | Rund et al. | Aug 1982 | |
| 4403275 | Oser | Sep 1983 | |
| 4562517 | Pankin | Dec 1985 | |
| 5479327 | Chen | Dec 1995 |