Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8342102 | Dual path kiln improvement | Douglas Monroe Tinsley, William S. Smoke, Levi A. Pollard | 2013-01-01 |
| 8201501 | Dual path kiln improvement | Douglas Monroe Tinsley, William S. Smoke, Levi A. Pollard | 2012-06-19 |