Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8905354 | External maintenance step and hand hold | Paul Charles Griffiths | 2014-12-09 |
| 8056913 | Step assist box-side | Christopher J. Kuntze, Brad E. Watson, Dan Glovak, Randy Bolt | 2011-11-15 |
| 7976042 | Retractable step | Bradley E. Watson, Charles Chuba, Ben Yang, Christopher J. Kuntze, Trevor Thompson | 2011-07-12 |