Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373219 | Control system for an electrically propelled traction vehicle | Francis M. Grabowski, Amy D. Duke, Frederick Beach, Paul H. Curtis | 1994-12-13 |
| 5280223 | Control system for an electrically propelled traction vehicle | Francis M. Grabowski, Amy D. Duke, Frederick Beach, Paul H. Curtis | 1994-01-18 |