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