Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748374 | Luminescent rare earth metal phosphate, luminescent screen provided with such a phosphate and low-pressure mercury vapor discharge lamp provided with such a screen | — | 1988-05-31 |
| 4379251 | Cathode-ray tube | Marcel Brouha, Waltherus Van Den Hoogenhof | 1983-04-05 |