| Number | Name | Date | Kind |
|---|---|---|---|
| D303441 | Keller | Sep 1989 | S |
| D400402 | Petkovich, Jr. | Nov 1998 | S |
| D468589 | Bulcher et al. | Jan 2003 | S |
| D480922 | Bulcher et al. | Oct 2003 | S |
| D481592 | Bulcher et al. | Nov 2003 | S |
| D483998 | Bulcher et al. | Dec 2003 | S |
| D489941 | Bulcher et al. | May 2004 | S |
| D541994 | Dana et al | May 2007 | S |
| 7441514 | Dana et al. | Oct 2008 | B2 |
| D586527 | Perkins | Feb 2009 | S |
| D676710 | Kwok | Feb 2013 | S |
| D683592 | Shields | Jun 2013 | S |