Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4917350 | Gasketless air damper | Barry C. Beyer | 1990-04-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4917350 | Gasketless air damper | Barry C. Beyer | 1990-04-17 |