Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9228314 | Quick coupler hydraulic control system | Trent Randall Stefek, Rudy V. Mills | 2016-01-05 |
| 9217235 | Tool coupler system having multiple pressure sources | Andy Lee Vering, Trent Randall Stefek | 2015-12-22 |
| 8869437 | Quick coupler | Trent Randall Stefek | 2014-10-28 |
| 8684623 | Tool coupler having anti-release mechanism | Andy Lee Vering, Richard Oswald, Trent Randall Stefek | 2014-04-01 |
| 8281506 | Tool coupler assembly | Trent Randall Stefek | 2012-10-09 |
| 7984575 | Quick coupler assembly | Trent Randall Stefek | 2011-07-26 |
| 7677965 | Combine harvester residue chopper active counter knife assembly | Herbert M. Farley, Nathan E. Isaac | 2010-03-16 |
| 7510472 | Combine harvester residue chopper active counter knife assembly | Herbert M. Farley, Nathan E. Isaac | 2009-03-31 |