Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10836668 | Furnace system | Witold Mastek, Jeff Alexander, Michele Furlan | 2020-11-17 |
| 10101090 | Duct cleaning and valve device for furnace system | Witold Mastek, Jeffrey C. Alexander | 2018-10-16 |