| Number | Name | Date | Kind |
|---|---|---|---|
| D339179 | Wilkinson | Jul 1993 | |
| D342298 | Schnabel et al. | Dec 1993 | |
| 4199136 | Mansfield | Apr 1980 | |
| 4360197 | Palmer | Nov 1982 | |
| 4426076 | Palmer | Jan 1984 | |
| 5118095 | Flor | Jun 1992 | |
| 5158512 | Irwin et al. | Oct 1992 | |
| 5277675 | Shifferaw | Jan 1994 | |
| 5290210 | Hand et al. | Mar 1994 | |
| 5352176 | Huang | Oct 1994 | |
| 5387166 | Gvoich | Feb 1995 |
| Entry |
|---|
| Gerstung-"Board" Apr., 1993. |