Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336749 | Fan housing unit and mounting device therefor | David A. Barnhart, David Walters | 1982-06-29 |
| 4266528 | Ducted/ductless range hood | David A. Barnhart, Ronald L. Britt, David Walters | 1981-05-12 |