Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5988157 | Furnace with split heat exchanger | Michael N. Brown, Dan Dobre | 1999-11-23 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5988157 | Furnace with split heat exchanger | Michael N. Brown, Dan Dobre | 1999-11-23 |