Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6491607 | Apparatus and method for lower back exercise | Louis J. Simmons, Allen K. Johnson | 2002-12-10 |
| 5356360 | Adjustable lever arm-variable resistance cam assembly | — | 1994-10-18 |
| 4911435 | Exercise machinery convertible for use by wheelchair-seated exercisers | — | 1990-03-27 |
| 4809973 | Weight training machine safety shield | — | 1989-03-07 |