Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699142 | Diffractive multifocal ophthalmic lens | Michael J. Simpson | 1997-12-16 |
| 5662706 | Variable transmissivity annular mask lens for the treatment of optical aberrations | Jerome A. Legerton, John M. Evans, Praful Doshi | 1997-09-02 |