Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6474689 | Adjustable tiller for vehicle | Jason Julius Rasmus | 2002-11-05 |
| 6199647 | Mid-wheel drive power wheelchair | Walter E. Schaffner, Stephen J. Antonishak | 2001-03-13 |
| 6186252 | Foldable midwheel drive power chair | Walter E. Schaffner, Gerald White, Stephen J. Antonishak | 2001-02-13 |
| 6176335 | Power wheelchair | Walter E. Schaffner, Stephen J. Antonishak | 2001-01-23 |
| 6129165 | Curb-climbing power wheelchair | Walter E. Schaffner, Stephen J. Antonishak, Gerald White | 2000-10-10 |
| 6000758 | Reclining lift chair | Walter E. Schaffner, Carl A. Kollar, Ronald Levi, Stephen J. Antonishak | 1999-12-14 |
| 5944131 | Mid-wheel drive power wheelchair | Walter E. Schaffner, Stephen J. Antonishak | 1999-08-31 |