| Number | Name | Date | Kind |
|---|---|---|---|
| D309246 | Cascio et al. | Jul 1990 | |
| D312563 | Hillinger | Dec 1990 | |
| D329367 | Landy | Sep 1992 | |
| D340633 | Badiali | Oct 1993 | |
| D346943 | Haberstroh | May 1994 | |
| D360344 | Eggert et al. | Jul 1995 | |
| 4951533 | Hillinger | Aug 1990 | |
| 5228363 | Corona et al. | Jul 1993 | |
| 5390572 | Gakhar et al. | Feb 1995 |