Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8851677 | Arrangement with a spectacle lens having a changeable effect and method for setting the effect of a spectacle lens | Gerhard Kelch | 2014-10-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8851677 | Arrangement with a spectacle lens having a changeable effect and method for setting the effect of a spectacle lens | Gerhard Kelch | 2014-10-07 |