| Number | Name | Date | Kind |
|---|---|---|---|
| D298641 | Sheltra | Nov 1988 | |
| D300046 | Armstrong et al. | Feb 1989 | |
| D300047 | Sheltra | Feb 1989 | |
| D305677 | Beistegui | Jan 1990 | |
| D318086 | Bingham et al. | Jul 1991 | |
| D324090 | Miller | Feb 1992 | |
| D330237 | Miller | Oct 1992 | |
| D340758 | Ueda | Oct 1993 | |
| D342299 | Birrell et al. | Dec 1993 | |
| 5125879 | Kuo | Jun 1992 |