Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6422306 | Heat exchanger with enhancements | Shaobo Jia | 2002-07-23 |
| RE37128 | Standing pilot furnace with vented vestibule | Steven W. McKinney | 2001-04-10 |
| 5293860 | Standing pilot furnace with vented vestibule | Steven W. McKinney | 1994-03-15 |
| 4982785 | Serpentine heat exchanger | — | 1991-01-08 |
| 4739746 | Heat exchanger for furnace | — | 1988-04-26 |
| 4702225 | Control for heat pipe central furnace | Edward J. Heffernan | 1987-10-27 |
| 4616994 | Gas burner with means for reducing NO.sub.x emissions | — | 1986-10-14 |
| 4577615 | Heat pipe central furnace | — | 1986-03-25 |
| 4543892 | Condensate handling means for condensing furnace | Bryan O. Trent | 1985-10-01 |
| 4542734 | High efficiency furnace with secondary heat exchanger | Bryan O. Trent | 1985-09-24 |
| 4289730 | Furnace with flue gas condensate neutralizer | — | 1981-09-15 |