Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4382207 | Luminescent material and discharge lamp containing the same | Johannus G. Verlijsdonk, Emiel P. J. de Meester, Willebrordus H. M. M. Van de Spijker, Johannes G. Verriet | 1983-05-03 |