Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8783048 | System and Method for Oil Return in an HVAC system | John Raymond Edens, Alan D. Marble, Kevin B. Mercer, Gary L. Sapp, Kristin L. Schaefer +1 more | 2014-07-22 |
| 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 |
| 8117862 | Device and method for recording air conditioning system information | Robert W. Helt, Jie Song, Gordon Jeffrey Hugghins, John T. Taylor, W. Randall Erwin +4 more | 2012-02-21 |
| 7866172 | System and method for controlling working fluid charge in a vapor compression air conditioning system | Jonathan D. Douglas, Gregory F. Walters | 2011-01-11 |