Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5550440 | Sinusoidal inductorless dimmer applying variable frequency power signal in response to user command | Greg Allison, James D. Christensen | 1996-08-27 |
| 5168417 | Isolated solid state relay | James D. Christensen | 1992-12-01 |