Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294141 | Attended to self propelled convertible pivoting wheelchair | Roland A. Mentessi, Neal J. Curran | 1994-03-15 |
| 4989890 | Length and width adjustable wheelchair | Walter G. Lockard, Herbert J. Hoekstra, Douglas M. Nickles | 1991-02-05 |
| 4981305 | Symmetrically modular wheelchair | Walter G. Lockard, Wieslaw Kosc | 1991-01-01 |
| 4840390 | Symmetrically modular wheelchair | Walter G. Lockard, Wieslaw Kosc | 1989-06-20 |
| 4813693 | Adjustable child's wheelchair | Walter G. Lockard, Herbert J. Hoekstra, Douglas M. Nickles | 1989-03-21 |
| 4555121 | Invalid's chair to facilitate transfer to an automobile | Walter G. Lockard, Nathalal G. Patel | 1985-11-26 |