Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4544997 | Low-pressure mercury vapor discharge lamp | Petrus F. J. van den Boom | 1985-10-01 |
| 4185222 | Luminescent bivalent europium-activated barium borophosphate and discharge lamp containing the same | Petrus F. J. van den Boom | 1980-01-22 |