Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8375897 | Gas water heater | Herbert Edward Smith | 2013-02-19 |
| 7634977 | Gas water heater | Herbert Edward Smith | 2009-12-22 |
| 7044124 | Heating apparatus having insulation-contacted fuel burners | Robert S. Glass | 2006-05-16 |
| 6964248 | Fuel-fired heating appliance with temperature-based fuel shutoff system | Bruce Hotton, John H. Scanlon, Gary A. Elder, James T. Campbell, Larry D. Kidd +6 more | 2005-11-15 |
| 6957628 | Fuel-fired heating appliance with temperature-based fuel shutoff system | Bruce Hotton, John H. Scanlon, Gary A. Elder, James T. Campbell, Larry D. Kidd +3 more | 2005-10-25 |
| 6893253 | Fuel-fired heating appliance with temperature-based fuel shutoff system | Bruce Hotton, John H. Scanlon, Gary A. Elder, James T. Campbell, Larry D. Kidd +6 more | 2005-05-17 |
| 6854428 | Water heater with normally closed air inlet damper | Bruce Hotton, Troy E. Trant, John H. Scanlon | 2005-02-15 |
| 6814031 | Combustion air shutoff apparatus for a fuel-fired heating appliance | Bruce Hotton, John H. Scanlon, Gary A. Elder, James T. Campbell, Larry D. Kidd +4 more | 2004-11-09 |
| 6776125 | Methods of operating a fuel-fired heating apparatus | Bruce Hotton, John H. Scanlon, Gary A. Elder, James T. Campbell, Larry D. Kidd +4 more | 2004-08-17 |
| 6715451 | Fuel-fired heating appliance with combustion air shutoff system having frangible temperature sensing structure | Bruce Hotton, John H. Scanlon, Gary A. Elder, James T. Campbell, Larry D. Kidd +4 more | 2004-04-06 |
| 6497200 | Fuel-fired heating appliance with combustion chamber temperature-sensing combustion air shutoff system | John H. Scanlon, Gary A. Elder, James T. Campbell, Larry D. Kidd, Eric M. Lannes | 2002-12-24 |
| 6418882 | Power vented, fuel fired water heater with soft ignition system | Troy E. Trant, Michael L. Burney, William T. Harrigill | 2002-07-16 |
| 5460290 | Water heater foam stop apparatus | David M. Hanning | 1995-10-24 |
| 5419449 | Water heater foam stop apparatus and associated methods | David M. Hanning | 1995-05-30 |
| 5292464 | Method of insulating a water heater and preventing flash using a foam stop | David M. Hanning | 1994-03-08 |
| 5207211 | Multiple U-tube down fired water heater | David M. Hanning | 1993-05-04 |
| 5197415 | Wet-base, down-fired water heater | Wilbur L. Haag, Jr. | 1993-03-30 |