Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11255540 | Crude and waste oil burner | — | 2022-02-22 |
| 11168272 | Mechanical power source with burner | — | 2021-11-09 |
| 10577550 | Continuously operable mechanical or electrical power source fueled by gas or solid fuel including gas from improved biomass downdraft gasifier | — | 2020-03-03 |
| 7841381 | Heat and energy recovery ventilators and methods of use | Jason Morosko, Louis Sulfstede | 2010-11-30 |
| 6039109 | Air to air heat and moisture recovery ventilator | Joseph Arden Crum | 2000-03-21 |
| 5285842 | Heat recovery ventilator | — | 1994-02-15 |
| 5183098 | Air to air heat recovery ventilator | — | 1993-02-02 |
| D330248 | Air to air heat exchanger | Craig J. Kinzelman, Noshir D. Colah, Harry Dewar | 1992-10-13 |