Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8123245 | Stabilized mobile unit or wheelchair | Charles E. Johnson | 2012-02-28 |
| 7921954 | Stabilized mobile unit or wheelchair | Charles E. Johnson, Jim Penson | 2011-04-12 |
| 7758063 | Stabilized mobile unit or wheelchair | Charles E. Johnson | 2010-07-20 |