Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9917491 | Ground ring and enclosure in an electric motor | Joel W. Northwall, Timothy J. Druhe, David M. Lyle | 2018-03-13 |
| 5192887 | Starting multi-speed motors at a low speed connection | — | 1993-03-09 |