Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10213866 | Dual-spectrum digital imaging welding helmet | William T. Matthews | 2019-02-26 |
| 9073138 | Dual-spectrum digital imaging welding helmet | William T. Matthews | 2015-07-07 |