Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7966716 | Method of assembling direct-drive generator | David M. Erdman, Joseph E. Miller, Girma Desta | 2011-06-28 |
| 7750522 | Slow-speed direct-drive generator | David M. Erdman, Joseph E. Miller, Girma Desta | 2010-07-06 |
| 7701095 | Permanent-magnet generator and method of cooling | David M. Erdman, Joseph E. Miller, Girma Desta | 2010-04-20 |
| 5815058 | Contact enhancement apparatus for an electric switch | — | 1998-09-29 |
| 5250867 | Permanent magnet brushless DC motor having reduced cogging | — | 1993-10-05 |