Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6601863 | Mid-wheel drive wheelchair with rigid front wheel anti-tip stabilizer | John Jindra, Jason D. Hunt, James R. Miadock | 2003-08-05 |
| 6131679 | Anti-tip assembly for power wheelchair | Dale A. Pulver | 2000-10-17 |
| 6073951 | Articulating seat/chassis interface for a wheelchair | John Jindra, Jason D. Hunt | 2000-06-13 |
| 6041876 | Anti-tip assembly for power wheelchair | Dale A. Pulver | 2000-03-28 |
| 5294141 | Attended to self propelled convertible pivoting wheelchair | Allen J. Boris, Neal J. Curran | 1994-03-15 |
| D332316 | Stile for use primarily as part of a space divider frame | George E. Sherbourne | 1993-01-05 |
| 5155955 | Frame based office space dividing system | Douglas C. Ball, Sherman Robbins, Michel J. Fischer, Leon Goldik, Donald J. Staufenberg +5 more | 1992-10-20 |
| 4759450 | Office paper and the like storage and handling system | Douglas C. Ball, Anthony S. Copeland | 1988-07-26 |