Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11071897 | Sports reaction time simulator | Wade Freeman | 2021-07-27 |
| 4824237 | Vision and hand/eye coordination exercising and testing machine | Ronald Ratner, Glenn A. Seifert, Stephen Selwyn, Marvin Zaro | 1989-04-25 |
| 4796883 | Method and apparatus for juggling | — | 1989-01-10 |
| 4732382 | Tennis training device | — | 1988-03-22 |