Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6649881 | Electric water heater with pulsed electronic control and detection | William Stout | 2003-11-18 |
| 6546897 | Thermodynamically activated flue damper | Thomas A. Edds | 2003-04-15 |