Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9890980 | System and method of freeze protection of a heat exchanger in an HVAC system | Robert W. Peitz, Brian L. Merkel | 2018-02-13 |
| 6370894 | Method and apparatus for using single-stage thermostat to control two-stage cooling system | Kevin D. Thompson, Dave Tumbusch | 2002-04-16 |