Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12099074 | Electronic proof of air flow switch | David Lee Haessig | 2024-09-24 |
| 12025329 | HVAC motor control local display and adjustment methods and apparatus for same | David Lee Haessig, Ronald Sai Kit Yip, Roger Hort | 2024-07-02 |