Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5051931 | Method and apparatus for exercising the eyes | Richard A. Cheu, Joel A. Dancyger | 1991-09-24 |
| 4824237 | Vision and hand/eye coordination exercising and testing machine | Harvey Ratner, Ronald Ratner, Stephen Selwyn, Marvin Zaro | 1989-04-25 |