Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6948553 | Modular heat recovery ventilation system | Michael Sean Day, Calvin R. Wylie | 2005-09-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6948553 | Modular heat recovery ventilation system | Michael Sean Day, Calvin R. Wylie | 2005-09-27 |