| Number | Name | Date | Kind |
|---|---|---|---|
| D417877 | Launder et al. | Dec 1999 | S |
| 6247255 | Clendenning | Jun 2001 | B1 |
| D480734 | Poutre | Oct 2003 | S |
| D486836 | Launder et al. | Feb 2004 | S |
| D499749 | Launder et al. | Dec 2004 | S |
| D505137 | Steinlage et al. | May 2005 | S |
| D527029 | Launder et al. | Aug 2006 | S |
| 7114272 | Clendenning et al. | Oct 2006 | B2 |