| Number | Name | Date | Kind |
|---|---|---|---|
| 4523692 | Lemkin | Jun 1985 | A |
| 5042674 | Ramsay et al. | Aug 1991 | A |
| 6431394 | Frankenberg | Aug 2002 | B2 |
| D480872 | Welsh et al. | Oct 2003 | S |
| D510802 | Sagol | Oct 2005 | S |
| D513870 | Rosine et al. | Jan 2006 | S |
| D519734 | Richardson et al. | May 2006 | S |
| D543030 | Schafer | May 2007 | S |
| D565297 | Stevens et al. | Apr 2008 | S |
| 7464831 | Aiken | Dec 2008 | B2 |
| D627562 | Osiecki et al. | Nov 2010 | S |