Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6264222 | Retractable stairway assembly for a vehicle | David Johnston, Michael K. Smith, Nasser Zamani, William G. Massey, III, Michael von Mayenburg +3 more | 2001-07-24 |
| 6178364 | Method of controlling a retractable stairway assembly | Paul J. Delurey, David Johnston, Michael K. Smith, Nasser Zamani, William G. Massey, III +3 more | 2001-01-23 |
| 6012765 | Truck door frame and door installation assembly | Homer Franklin Wright, Jr., Edmond Kalstiantz | 2000-01-11 |
| 5984404 | Vehicle with bed raising and lowering system | Ferdinand F. Hellhake, Mark S. Hurayt, Byron J. Bocian, Charles H. Blakewood, Jr., Duncan Good | 1999-11-16 |
| 5863093 | Truck cab front opening and firewall assembly | Edmond Kalstiantz, Homer Franklin Wright, Jr., Ernest Friesen | 1999-01-26 |
| 5769486 | Truck roof mounting system | Homer Franklin Wright, Jr. | 1998-06-23 |