Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5831409 | Electric vehicle propulsion system employing AC induction motor control | Frank A. Lindberg, David L. Schantz, Jr., Brian H. Smith, Charles S. Kerfoot, Joseph J. Springer +17 more | 1998-11-03 |
| 5504378 | Direct cooled switching module for electric vehicle propulsion system | Frank A. Lindberg, William B. Hall, Frank E. Altoz, Ngon B. Nguyen | 1996-04-02 |