Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677598 | Low-pressure mercury discharge lamp with color temperature adjustment | Johannes T. W. De Hair | 1997-10-14 |
| 5669510 | Method and device for selecting low-pressure murcury discharge lamps | Petrus C. Lauwerijssen, Johannes T. W. De Hair, Henricus C. G. Verhaar | 1997-09-23 |
| 5150014 | Lamp ballast control circuit and method | — | 1992-09-22 |