Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D271615 | Damper unit | John Prikkel, III, Dale R. Booher | 1983-11-29 |
| 4361272 | Thermal damper for rectangular flue | John Prikkel, III, Dale R. Booher | 1982-11-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D271615 | Damper unit | John Prikkel, III, Dale R. Booher | 1983-11-29 |
| 4361272 | Thermal damper for rectangular flue | John Prikkel, III, Dale R. Booher | 1982-11-30 |