Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6390028 | Fuel-fired liquid heating appliance with burner shut-off system | John P. Langmead, Larry D. Kidd | 2002-05-21 |
| 6035812 | Combustion air shutoff system for a fuel-fired heating appliance | William T. Harrigill | 2000-03-14 |
| 5954265 | Diagnostic system for a fuel-fired water heater | David L. Henderson, Jeffrey A. Leep | 1999-09-21 |
| 5949960 | Electric water heater with dry fire protection system incorporated therein | — | 1999-09-07 |
| 5697330 | Power-vented, direct-vent water heater | Michael Edward Yetman, Maurice Jenson | 1997-12-16 |
| 5158446 | Combination pressure and temperature limit control for a fuel-fired, forced draft heating appliance combustion product exhaust system | — | 1992-10-27 |
| 5085205 | Fuel-fired water heated with combination drainage pan and combustion air flow control apparatus | Timothy E. Powell | 1992-02-04 |