| Number | Name | Date | Kind |
|---|---|---|---|
| D368775 | Gobran | Apr 1996 | |
| D372532 | Rossini et al. | Aug 1996 | |
| D377979 | Plaschko et al. | Feb 1997 | |
| D384151 | Raufman | Sep 1997 | |
| D384152 | Raufman | Sep 1997 | |
| 5154715 | Iten | Oct 1992 | |
| 5312387 | Rossini et al. | May 1994 | |
| 5549592 | Fries et al. | Aug 1996 | |
| 5603708 | Seth | Feb 1997 |