| Number | Name | Date | Kind |
|---|---|---|---|
| D377299 | McGill | Jan 1997 | S |
| 6332412 | Swab et al. | Dec 2001 | B1 |
| 6405665 | Henry et al. | Jun 2002 | B1 |
| 7096803 | Bergen | Aug 2006 | B2 |
| D572546 | Stahm | Jul 2008 | S |
| 7617783 | Cruson | Nov 2009 | B1 |
| 8342109 | Senchuk et al. | Jan 2013 | B2 |
| 8453586 | Cruson | Jun 2013 | B2 |
| 8544396 | Anderson | Oct 2013 | B1 |