Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5366668 | Polymeric bifocal lens production process | Matthew John Cuthbertson | 1994-11-22 |
| 4522768 | Casting gasket assembly and method for casting lenses therefrom | Harold N. Roscrow, Ronald W. Ewer, deceased | 1985-06-11 |