| Number | Name | Date | Kind |
|---|---|---|---|
| D351479 | Meyer | Oct 1994 | |
| D367123 | Blye | Feb 1996 | |
| D367542 | Kovacik et al. | Feb 1996 | |
| D389931 | Kovacik et al. | Jan 1998 | |
| D409776 | Ghode et al. | May 1999 | |
| 4258414 | Sokol | Mar 1981 | |
| 4262327 | Kovicik et al. | Apr 1981 | |
| 4287456 | Kovacik et al. | Sep 1981 | |
| 4321660 | Sokol | Mar 1982 | |
| 4598344 | Nadler | Jul 1986 | |
| 4774647 | Kovacik et al. | Sep 1988 | |
| 4977489 | Fung | Dec 1990 | |
| 5217297 | Yuen | Jun 1993 | |
| 5436815 | Grooms et al. | Jul 1995 | |
| 5465196 | Hasenberg et al. | Nov 1995 | |
| 5558425 | Pons et al. | Sep 1996 |