Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6880231 | Electric motor and method for reducing end play | Robert Campbell, Russell C. Proctor | 2005-04-19 |
| 6842966 | Electric motor and method for reducing end play | Robert Campbell, Dana John Hassan, Russell C. Proctor | 2005-01-18 |