Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859904 | High contrast electroluminescent displays | Aron Vecht | 1989-08-22 |
| 4849673 | Electroluminescent devices without particle conductive coating | Norman J. Werring, Ray Ellis | 1989-07-18 |