| Number | Name | Date | Kind |
|---|---|---|---|
| D258861 | Bratton et al. | Apr 1981 | |
| D273076 | Bodfish | Mar 1984 | |
| D290581 | Hughes | Jun 1987 | |
| D303920 | Kandel | Oct 1989 | |
| D303921 | Blochlinger et al. | Oct 1989 | |
| D326793 | Ernster | Jun 1992 | |
| D353976 | Perkins | Jan 1995 | |
| 4197611 | Bell et al. | Apr 1980 |
| Entry |
|---|
| handle #SN 70/s (top right) Hong Kong Enterprise, p. 247 Jan. 1985. |