Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7434592 | Ergonomic collapsible crutch | Brad Larson, Ken Lester, Eric Nilson, Mark Nilson | 2008-10-14 |
| 7104271 | Ergonomic collapsible crutch | Brad Larson, Ken Lester, Eric Nilson, Mark Nilson | 2006-09-12 |