Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6819252 | Carbon monoxide and smoke detection apparatus | Derek Johnston | 2004-11-16 |
| 6798153 | Method of regulating power in a high-intensity-discharge lamp | Charles B. Mattas, Oscar Deurloo | 2004-09-28 |
| 6522088 | Lamp ignition with automatic compensation for parasitic capacitance | — | 2003-02-18 |
| 6426703 | Carbon monoxide and smoke detection apparatus | Derek Johnston | 2002-07-30 |
| 6396220 | Lamp ignition with compensation for parasitic loading capacitance | James A. Kocur | 2002-05-28 |