Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8385729 | Heat pump water heater and associated control system | Kelvin W. Kleman, Randy R. Koivisto | 2013-02-26 |
| 6901766 | Coil drain pan apparatus | Changjiang Jin, Phillip Guy Brown | 2005-06-07 |
| 5293758 | Outside section for split system air conditioning unit | David Ames, Stephen P. Bartlett, Darrell D. Beitel, Alain R. Parmentier, Andre Vivarie | 1994-03-15 |
| D341880 | Outdoor section for a split system air conditioning unit | David Ames, Stephen P. Bartlett, Darrell D. Beitel, Alain R. Parmentier | 1993-11-30 |
| 4573326 | Adaptive defrost control for heat pump system | Louis Sulfstede, Robert W. Helt | 1986-03-04 |