Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047306 | Top drive drilling system and other applications using a low speed direct drive AC motor | Kevin R. Williams, Alvie E. Howard, Jr., Daniel F. McNease, Richard O. Bradley | 2011-11-01 |
| 7500531 | Low speed AC motor for direct drive applications | Kevin R. Williams, Alvie E. Howard, Jr., Daniel F. McNease, Richard O. Bradley | 2009-03-10 |