| Number | Name | Date | Kind |
|---|---|---|---|
| D199505 | Swett | Nov 1964 | S |
| D284728 | Trivison | Jul 1986 | S |
| D311665 | Carlson | Oct 1990 | S |
| D369755 | Burcham et al. | May 1996 | S |
| 5518152 | Burcham et al. | May 1996 | A |
| D401868 | Robbins | Dec 1998 | S |
| D403601 | Robbins, III | Jan 1999 | S |
| D405703 | Robbins, III | Feb 1999 | S |
| D418068 | Robbins, III | Dec 1999 | S |
| D511655 | Kim | Nov 2005 | S |
| D528374 | Heiberg et al. | Sep 2006 | S |
| D543467 | Dorn | May 2007 | S |
| D554301 | Fick | Oct 2007 | S |