Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11466892 | Backdraft damper having damper blades with opposed movement linkage | Ron Chappell | 2022-10-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11466892 | Backdraft damper having damper blades with opposed movement linkage | Ron Chappell | 2022-10-11 |