Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6036480 | Combustion burner for a water heater | Dennis R. Hughes, David Kramer, Darryl L. Ruark, Gary J. Potter, Martin P. McCathern | 2000-03-14 |
| 5735237 | Hot water storage heater | Darryl L. Ruark, Gary J. Potter | 1998-04-07 |