Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9897340 | Economizer having source-specific damper blade assemblies and heating, ventilation and air conditioning unit employing the same | Jonathan D. Douglas | 2018-02-20 |
| 9541298 | Economizer having source-specific damper blade assemblies and heating, ventilation and air conditioning unit employing the same | Jonathan D. Douglas | 2017-01-10 |
| 8880224 | Airflow managing system, a method of monitoring the airflow in an HVAC system and a HVAC system | Mark D. Hess, Richard A. Mauk, Stephen A. Walter, David Michael Wynnick | 2014-11-04 |
| 8151931 | Acoustic noise control in heating or cooling systems | Mark Cree Jackson | 2012-04-10 |
| 6893220 | Centrifugal fan | Steven C. Guzy, Garrett Wade Hoehn | 2005-05-17 |