Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8147386 | Integral treadmill resistance training apparatus | Douglas G. Dixon | 2012-04-03 |
| 7985166 | Treadmill conversion resistance training apparatus | Douglas G. Dixon | 2011-07-26 |