Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4933600 | Low-pressure mercury vapor discharge lamp, particularly ultra-violet radiator, also providing visible light output | — | 1990-06-12 |
| 4490933 | Internally illuminated display structure | Ruald Nellis | 1985-01-01 |