Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7082942 | Wood burner with improved emissions | Ralph E. Morrison | 2006-08-01 |
| 6935333 | Wood burner with improved emissions | Ralph E. Morrison | 2005-08-30 |
| 6705310 | Wood burner with improved emissions | Ralph E. Morrison | 2004-03-16 |
| 5626127 | Clean face air circulating fireplace | Kenneth R. Maitland, Mark Barnes, Brian S. Ohlwine | 1997-05-06 |