Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669510 | Method and device for selecting low-pressure murcury discharge lamps | Petrus C. Lauwerijssen, Johannes T. W. De Hair, Lukas Kastelein | 1997-09-23 |
HV
Henricus C. G. Verhaar
Overall (1997): #142,873 of 185,788Top 80%
1
Patents 1997