| 6927544 |
Lighting control system with variable arc control including start-up circuit for providing a bias voltage supply |
— |
2005-08-09 |
| 6724152 |
Lighting control system with variable arc control including start-up circuit for providing a bias voltage supply |
— |
2004-04-20 |
| 6075326 |
High intensity discharge lamp ballast and lighting system |
— |
2000-06-13 |
| 5734230 |
Fail-safe lighting system with load shedding and dimming |
M. Larry Edwards, Mark Brown, Roland O. Hildebrand |
1998-03-31 |
| 5675476 |
Phase controlled bridge |
— |
1997-10-07 |
| 5633564 |
Modular uninterruptible lighting system |
M. Larry Edwards, Roland O. Hildebrand |
1997-05-27 |
| 5614810 |
Power factor correction circuit |
Bryce L. Hesterman |
1997-03-25 |
| 5583402 |
Symmetry control circuit and method |
Mihail S. Moisin, Bryce L. Hesterman, Antonio M. Marques |
1996-12-10 |
| 5063331 |
High frequency oscillator-inverter circuit for discharge lamps |
— |
1991-11-05 |