Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4719550 | Uninterruptible power supply with energy conversion and enhancement | Jeffrey M. Powell | 1988-01-12 |
| 4709318 | UPS apparatus with control protocols | Jeffrey M. Powell | 1987-11-24 |