Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D337362 | Exercise step | Eric Goldstein, William J. Saunders | 1993-07-13 |
| 5213554 | Stepping device | Eric Goldstein, William J. Saunders | 1993-05-25 |
| 5158512 | Adjustable stepping structure for aerobic exercises | Lyle Ray Irwin, Peter H. Hand | 1992-10-27 |