| Number | Name | Date | Kind |
|---|---|---|---|
| 6582087 | Whitehead et al. | Jun 2003 | B2 |
| D489658 | Metros et al. | May 2004 | S |
| 7216993 | Murray | May 2007 | B2 |
| 20050259340 | Fimeri et al. | Nov 2005 | A1 |
| 20060103957 | Olijnyk et al. | May 2006 | A1 |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 29321829 | Jul 2008 | US |
| Child | 29496125 | US |