Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6925999 | Multistage warm air furnace with single stage thermostat and return air sensor and method of operating same | Gordon Jeffrey Hugghins | 2005-08-09 |
| 6377426 | Gas furnace with variable speed draft inducer | G. Jeffrey Hugghins, Robert W. Helt, James T. Vershaw, Timothy Wayne Storm | 2002-04-23 |
| 6257870 | Gas furnace with variable speed draft inducer | G. Jeffrey Hugghins, Robert W. Helt, James T. Vershaw, Timothy Wayne Storm | 2001-07-10 |