Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8274175 | Method and arrangement in conjunction with emergency light | — | 2012-09-25 |
| 7352137 | Controlling color temperature of lighting fixture | — | 2008-04-01 |
| 6717367 | Emergency lighting arrangement and apparatus | — | 2004-04-06 |
| 6538448 | Determining remaining operating life of fluorescent lamp | — | 2003-03-25 |