Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6998754 | Brush assemblies | Michael Nedriga, Pimol Vonkchalee, Shepard Hockaday, Otway Southall | 2006-02-14 |
| 6924577 | Brush box assembly | Otway Southall, Dan Shull | 2005-08-02 |
| 6236136 | Methods and results of manufacturing commutators | Shepard Hockaday, Tony Earl Hall, John David Reece, Jr. | 2001-05-22 |