Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5994831 | Low-pressure mercury discharge lamp with luminescent layer | Dick Van Der Voort, Jan Willem Frederik Dorleijn | 1999-11-30 |
| 5801482 | Low-pressure mercury vapor discharge lamp | Henriette Jacoba Talen-Van Der Mheen, Christianus J. Roozekrans, Wilhelmus M. P. Van Kemenade | 1998-09-01 |
| 5753999 | Low-pressure mercury vapour discharge lamp | Christianus J. Roozekrans | 1998-05-19 |
| 5669510 | Method and device for selecting low-pressure murcury discharge lamps | Petrus C. Lauwerijssen, Johannes T. W. De Hair, Lukas Kastelein | 1997-09-23 |