| Number | Name | Date | Kind |
|---|---|---|---|
| 2782887 | Zimmermann | Feb 1957 | A |
| 4856230 | Slocomb | Aug 1989 | A |
| D307486 | Westphal et al. | Apr 1990 | S |
| 4944118 | Biro | Jul 1990 | A |
| D325991 | Valentin | May 1992 | S |
| 6006478 | Hubner et al. | Dec 1999 | A |
| 6047514 | Verch | Apr 2000 | A |
| D430941 | Franson et al. | Sep 2000 | S |
| 6698157 | Porter | Mar 2004 | B1 |
| D572835 | Willman | Jul 2008 | S |
| 20050028459 | Crandell et al. | Feb 2005 | A1 |
| 20060026913 | Turner | Feb 2006 | A1 |
| 20060096193 | Ohrstrom | May 2006 | A1 |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 29349766 | Apr 2010 | US |
| Child | 29374947 | US |