| Number | Name | Date | Kind |
|---|---|---|---|
| D275396 | Porat et al. | Sep 1984 | |
| D347012 | Huston et al. | May 1994 | |
| D413908 | Kasperik | Sep 1992 | |
| 5122017 | Niebauer | Jun 1992 | |
| 5147159 | Lowe et al. | Sep 1992 |
| Entry |
|---|
| United States Registration No. 2,225,395, granted Feb. 23, 1999. |
| United States Registration No. 2,068,211, granted Jun. 10, 1997. |