Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8534213 | Skid shoe assembly for loading and transporting large structures | James Scott Chitwood, David Alex Knoll, William Michael Pritchett, Roy Keith Smith, Wilbert Ray Ulbricht | 2013-09-17 |
| 4720214 | Mudmat design | Lee K. Brasted | 1988-01-19 |