Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4223832 | Damper for an air distribution system | Dimiter Gorchev, Herbert Willke | 1980-09-23 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4223832 | Damper for an air distribution system | Dimiter Gorchev, Herbert Willke | 1980-09-23 |