Issued Patents All Time
Showing 25 most recent of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10643489 | Constructed response scoring mechanism | Jon D. Cohen, Joseph L. Dvorak, Walid S. Saba | 2020-05-05 |
| 9812026 | Constructed response scoring mechanism | Jon D. Cohen, Joseph L. Dvorak, Walid S. Saba | 2017-11-07 |
| 9704410 | System and method for pre-selection in computer adaptive tests | — | 2017-07-11 |
| 7946370 | Operator compartment assembly | Gary J. Homola, Rodney Koch, Dan Frederick, Thomas J. Roan | 2011-05-24 |
| 7798260 | Track vehicle having drive and suspension systems | Gary J. Homola, Rodney Koch, Lance S. Tuhy, Thomas J. Roan | 2010-09-21 |
| 7396070 | Relocatable position operator seat station for loader | — | 2008-07-08 |
| 7296862 | Collapsible track undercarriage for installation and tensioning | Dan Frederick, Rodney Koch, Andrew A. Wehseler | 2007-11-20 |
| 7290977 | Powered coupling of attachment hydraulics | Wally L. Kaczmarski | 2007-11-06 |
| 7231993 | Drive track support with vibration isolation | Dan Frederick | 2007-06-19 |
| 7059238 | Method and apparatus for stroke position sensor for hydraulic cylinder | Mark F. Bares, William C. Shelbourn, Scott Mason | 2006-06-13 |
| 6910731 | Skid steer loader with front pivoting cab having a no tool latch | James E. Asche, Lance S. Tuhy, Jon P. Spomer | 2005-06-28 |
| D504136 | Skid steer loader with extendable lift arms | James E. Asche, Dan Frederick, Thomas J. Roan, Gary W. Weddle | 2005-04-19 |
| 6871697 | Integrated fluid reservoir and heat exchanger ducts | Lonnie D. Hoechst, Daniel A. Frederick | 2005-03-29 |
| 6866466 | Folding lift arm assembly for skid steer loader | Thomas J. Roan | 2005-03-15 |
| 6860707 | Support frame structure for loader lift arms | Thomas J. Roan | 2005-03-01 |
| 6805038 | Hydraulic cylinder pivot pin | — | 2004-10-19 |
| D492327 | Skid steer loader with lift arms | James E. Asche, Dan Frederick, Thomas J. Roan, Gary W. Weddle | 2004-06-29 |
| 6733062 | Combined tailgate and hinged engine cover | Dan Frederick | 2004-05-11 |
| 6726437 | Telescoping loader lift arm | Thomas J. Roan, Gregory L. Fischer | 2004-04-27 |
| 6694571 | Loader attachment pivot pin assembly | Mark F. Bares | 2004-02-24 |
| 5992576 | Parking lock with secondary brake | Gerald M. Berg | 1999-11-30 |
| 5577876 | Hydraulic interblock system | Thomas Q. Haeder, Orlan J. Loraas, William C. Shelbourn, Gerald M. Berg, Lyle L. Johnson +2 more | 1996-11-26 |
| 5562397 | Power actuator for attachment plate | — | 1996-10-08 |
| 5551523 | Traction lock | Gerald M. Berg | 1996-09-03 |
| 5169278 | Vertical lift loader boom | Lonnie D. Hoechst, Orlan J. Loraas, Wally L. Kaczmarski | 1992-12-08 |