Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4716335 | Luminescent screen and low-pressure mercury vapor discharge lamp provided with such a screen | Johannus G. Verlijsdonk | 1987-12-29 |
| 4716336 | Luminescent screen and low-pressure mercury vapor discharge lamp provided with such a screen | Johannus G. Verlijsdonk | 1987-12-29 |
| 4716337 | Fluorescent lamp | Cornelis Huiskes | 1987-12-29 |