Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6935448 | Obstacle traversing wheelchair | William A. Null | 2005-08-30 |
| 6923280 | Obstacle traversing wheelchair | William A. Null | 2005-08-02 |
| 6889726 | Method and apparatus for filling portable high pressure cylinders with respiratory oxygen | Joseph B. Richey, II | 2005-05-10 |