Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10921614 | Low-convergence negative power spectacles | Jeffrey P. Krall, Gergely T. Zimanyi | 2021-02-16 |
| 10908434 | Negative power lens with off-axis curvature center | Jeffrey P. Krall, Gergely T. Zimanyi | 2021-02-02 |