Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10132126 | Modular top drive | Martin Helms, Martin Liess, Christian KIESS | 2018-11-20 |
| 10113544 | Long-stroke pumping unit | Clark E. Robison, Jeffrey J. Lembcke, Victoria M. Pons, William Kevin Hall, John Edward Stachowiak, Jr. +3 more | 2018-10-30 |