Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9359831 | Top drive main shaft with threaded load nut | Michael Raymond Netecke | 2016-06-07 |
| 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, Rudy Harris | 2011-11-01 |
| 7500531 | Low speed AC motor for direct drive applications | Kevin R. Williams, Alvie E. Howard, Jr., Daniel F. McNease, Rudy Harris | 2009-03-10 |