Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5983149 | Automatic vehicle speed retarding control through actuation of wheel brakes | William J. Tate, Craig L. Koehrsen, Karl W. Kleimenhagen | 1999-11-09 |
| 5420791 | Supplemental front wheel drive control system | William J. Tate, Giles K. Sorrells | 1995-05-30 |
| 5361208 | Supplemental front wheel drive control system and method | William J. Tate, Giles K. Sorrells | 1994-11-01 |
| 5147010 | Method and apparatus for controlling a supplemental vehicle drive in response to slip in a main vehicle drive | William J. Tate | 1992-09-15 |