| Number | Name | Date | Kind |
|---|---|---|---|
| D297628 | Robson | Sep 1988 | |
| 4099658 | Bott | Jul 1978 | |
| 4133465 | Bott | Jan 1979 | |
| 4162755 | Bott | Jul 1979 | |
| 4182471 | Bott | Jan 1980 | |
| 4274570 | Bott | Jun 1981 | |
| 4295587 | Bott | Oct 1981 | |
| 4323182 | Bott | Apr 1982 | |
| 4341332 | Kowalski et al. | Jul 1982 | |
| 4364500 | Bott | Dec 1982 | |
| 4431123 | Bott | Feb 1984 | |
| 4473178 | Bott | Sep 1984 | |
| 4516710 | Bott | May 1985 | |
| 4684048 | Bott | Aug 1987 | |
| 4754905 | Bott | Jul 1988 | |
| 4767041 | Stapleton | Aug 1988 | |
| 4834448 | Sakamoto et al. | May 1989 |