Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5103141 | Switching arrangement for increasing the white life of a high pressure sodium lamp | Robertus A. J. Keijser | 1992-04-07 |
PW
Petrus A. M. Weerdestein
Overall (All Time): #3,847,661 of 4,157,543Top 95%
1
Patents All Time