Issued Patents 2018
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10098788 | Electro-optical glare-protection filter with a liquid crystal cell being a fringe-field switching cell for a welder protection device | Leo Keller | 2018-10-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10098788 | Electro-optical glare-protection filter with a liquid crystal cell being a fringe-field switching cell for a welder protection device | Leo Keller | 2018-10-16 |