| Number | Name | Date | Kind |
|---|---|---|---|
| D333686 | Barr et al. | Mar 1993 | |
| D350992 | Barr | Sep 1994 | |
| D362692 | Rissman et al. | Sep 1995 | |
| D380501 | Osterhout et al. | Jul 1997 | |
| 4568080 | Yokoi | Feb 1986 | |
| 4969647 | Mical et al. | Nov 1990 | |
| 4976429 | Nagel | Dec 1990 |
| Entry |
|---|
| Hong Kong Enterprise, p.133, Oct. 1994. |
| Hong Kong Enterprise, p. 130, Oct. 1994. |