Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10557540 | Fleet angle tolerant sheave | — | 2020-02-11 |
| 8448320 | Clamp apparatus for threadedly connected tubulars | Ronald W. Yater, Lawrence E. Wells, Neil Edward West, Cliff Swiontek | 2013-05-28 |
| 7784834 | Clamp apparatus for threadedly connected tubulars | Ronald W. Yater, Lawrence E. Wells, Neil Edward West, Cliff Swiontek | 2010-08-31 |
| 7748473 | Top drives with shaft multi-seal | Lawrence E. Wells, Preston R. Fox, Cliff Swiontek, Svein Stubstad, James D. Brugman +1 more | 2010-07-06 |
| 7487848 | Multi-seal for top drive shaft | Larry Wells, Svein Stubstad, James D. Brugman, Paul Conover | 2009-02-10 |