| Number | Name | Date | Kind |
|---|---|---|---|
| D233238 | Reid et al. | Oct 1974 | |
| D272833 | Assche et al. | Feb 1984 | |
| D392878 | Nordstrom et al. | Mar 1998 | |
| 3748366 | Rader et al. | Jul 1973 | |
| 4773865 | Baldwin | Sep 1988 | |
| 5593306 | Kohnke | Jan 1997 | |
| 5853292 | Eggert et al. | Dec 1998 | |
| 5941710 | Lampotang et al. | Aug 1999 | |
| 5967790 | Strover et al. | Oct 1999 |