Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6955115 | Hydraulic circuit having pressure equalization during regeneration | Michael A. A'Hearn, Thomas J. Hajek, Sr., Daniel T. Mather, Srikrishnan T. Tolappa | 2005-10-18 |
| 4920861 | Load piston reset control mechanism | — | 1990-05-01 |
| 4771864 | Lubricated spline joint | Dwight V. Stone, Ronald E. Tomevi | 1988-09-20 |
| 4343151 | Series - parallel selector for steering and implement | — | 1982-08-10 |
| 4334553 | Resettable valve spool with kick-out member | Thomas J. Hajek, Jr. | 1982-06-15 |