Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11554193 | Bioaerosol inactivator UVC antimicrobial reactor | — | 2023-01-17 |
| D652556 | Dome lighting assembly | Ashot Nalbandyan | 2012-01-17 |
| 7948184 | Vehicle testing lamp apparatus, system, and method | David M. Heffelfinger, David McDonald, Ashot Nalbandyan | 2011-05-24 |
| 6140778 | Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like | David McDonald, Zhong Yan, George C. Johnson | 2000-10-31 |
| 5982112 | Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like | David McDonald, Zhong Yan, George C. Johnson | 1999-11-09 |
| 5179399 | Theatre in the round projection apparatus and method | — | 1993-01-12 |
| 5150012 | Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like | David McDonald, Zhong Yan | 1992-09-22 |
| 4750097 | Lamp reflector assembly | Helen Gourley | 1988-06-07 |
| 4692607 | Controlled color light source | John LaBelle, Daniel B. McKenna | 1987-09-08 |
| 4686612 | Lamp reflector assembly | Helen Gourley | 1987-08-11 |