Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6443251 | Methods for stair climbing in a cluster-wheel vehicle | John B. Morrell | 2002-09-03 |
| 6343664 | Operating modes for stair climbing in a cluster-wheel vehicle | John B. Morrell | 2002-02-05 |