Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8066567 | Joystick with control dampening and detent using electrorheologic cylinder | Eric R. Anderson | 2011-11-29 |
| 6213244 | Multi function control mechanism | William Damm Zopf, Douglas Brian Stickney | 2001-04-10 |
| 5251705 | Electrical trigger for quick drop valve | Donald McGovern | 1993-10-12 |
| 4938091 | Three function control mechanism | Michael Barr, Allan F. Loney | 1990-07-03 |
| 4535860 | Tandem drive mounting | — | 1985-08-20 |
| 4218936 | Lock mechanism for service brake | — | 1980-08-26 |