Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5859499 | Emergency lighting system with a DC sensing load relay | Robert K. McAfee, Marnie E. Rycroft | 1999-01-12 |
| 5688042 | LED lamp | Abolfazl Madadi, David J. Rycroft | 1997-11-18 |