Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7334834 | Tractor cab roof with integral HVAC air ducts | Thomas Chilton Hill, Paul M. Elhardt | 2008-02-26 |
| D546841 | Tractor cab interior | Michael McCarren, Anthony Baxter, James Heinrich Weitz, Thomas Chilton Hill, Paul M. Elhardt | 2007-07-17 |
| D531646 | Tractor cab | Michael McCarren, Anthony Baxter, James Heinrich Weitz, Thomas Chilton Hill, Paul M. Elhardt | 2006-11-07 |