Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5971850 | Game apparatus having incentive producing means | — | 1999-10-26 |
| 5437289 | Interactive sports equipment teaching device | Richard G. Spademan | 1995-08-01 |
| 5426871 | Ankle flexion limiting device | Richard G. Spademan | 1995-06-27 |
| 5370399 | Game apparatus having incentive producing means | — | 1994-12-06 |