| Number | Name | Date | Kind |
|---|---|---|---|
| D234273 | Wilson et al. | Feb 1975 | |
| D286466 | King et al. | Nov 1986 | |
| D291388 | Seguin | Aug 1987 | |
| D298486 | Jain | Nov 1988 | |
| D300988 | Melk | May 1989 | |
| 3895696 | Urushibara | Jul 1975 | |
| 4067422 | Eberle | Jan 1978 | |
| 4261448 | Myers et al. | Apr 1981 | |
| 4743038 | Myers et al. | May 1988 |