| Number | Date | Country | Kind |
|---|---|---|---|
| 2018806 | Nov 1991 | GBX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D312451 | Katoh et al. | Nov 1990 | |
| D313979 | Miyakuni | Jan 1991 | |
| D317176 | Cheung | May 1991 |
| Entry |
|---|
| 1988 catalog, Video Technology Industries, Inc., p. 14. |
| 1991 catalog, Video Technology Industries, Inc., p. 10. |
| 1991 catalog, Video Technology Electronics, Ltd., p. 14. |