Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8417386 | System and method for defrost of an HVAC system | Jonathan D. Douglas, Darryl E. Denton, Alan D. Marble, Kevin B. Mercer, Gary L. Sapp +1 more | 2013-04-09 |
| 8327658 | System and method for oil return in an HVAC system | Jonathan D. Douglas, John Raymond Edens, Alan D. Marble, Kevin B. Mercer, Gary L. Sapp +2 more | 2012-12-11 |
| 8116911 | System and method for sump heater control in an HVAC system | John Bailey, Jose Luis Balderrama, Jonathan D. Douglas, John Raymond Edens, Alan D. Marble +3 more | 2012-02-14 |