Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487979 | Stowable shelf assembly | David Ash, John E. Knudtson, DeRay G. Steffensen | 2002-12-03 |
| 6398283 | Movable cargo tray apparatus | John E. Knudtson, David Ash, DeRay G. Steffensen, Nevin L. Martin, Jr. | 2002-06-04 |