Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6652100 | Retinoscope with magnetic coupling | James Robert Matthews | 2003-11-25 |
| 6250761 | Retinoscope | Kelvyn Church | 2001-06-26 |
| 4924867 | Tonometer apparatus | James Robert Matthews, John Fisher | 1990-05-15 |
| 4834105 | Calibration method and apparatus for tonometers | James Robert Matthews, John Fisher | 1989-05-30 |