Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5432413 | Control system for an electrically propelled traction vehicle | Amy D. Duke, Frederick Beach, Wing Yeung Chung | 1995-07-11 |
| 5373219 | Control system for an electrically propelled traction vehicle | Amy D. Duke, Frederick Beach, James W. Nash, Paul H. Curtis | 1994-12-13 |
| 5280223 | Control system for an electrically propelled traction vehicle | Amy D. Duke, Frederick Beach, James W. Nash, Paul H. Curtis | 1994-01-18 |
| 5070959 | Work vehicle having an electric propulsion system with adapted overspeed limit for traction motors | — | 1991-12-10 |