Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5906565 | Liquid resistance or therapy system for use with an exercise and/or therapy apparatus | Frank H. Speckhart, Alan Scott, Wil Siersma | 1999-05-25 |
| 5885194 | Attachment system for suspending an exercise and/or therapy apparatus in a pool of liquid | Frank H. Speckhart, Alan Scott, Wil Siersma | 1999-03-23 |
| 5665039 | Excercise and/or therapy apparatus having an impeller for use in a pool of liquid | Frank H. Speckhart, Alan Scott, Wil Siersma | 1997-09-09 |