Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4370595 | Low-pressure mercury vapor discharge lamp | Petrus J. M. Willemsen, Robert C. Peters | 1983-01-25 |
| 4354139 | Low-pressure mercury vapor discharge lamp | Robert C. Peters, Petrus J. M. Willemsen | 1982-10-12 |
| 4315191 | Luminescent material with alkaline earth metal silicate aluminate host lattice and low-pressure mercury vapor discharge lamp containing the same | Gert M. Boogerd, Henricus L. M. Tonnaer | 1982-02-09 |
| 4233538 | Luminescent lead-activated alkaline earth metal rare earth metal borates and mercury vapor discharge lamp containing the same | Willebrordus H. M. M. Van de Spijker | 1980-11-11 |