Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9458679 | Apparatus and method for damping vibration in a drill string | William Evans Turner, Mark Hutchinson, Dirk Bosman, Mark Ellsworth Wassell, Carl Allison Perry | 2016-10-04 |
| 9279903 | Apparatus for measuring bending on a drill bit operating in a well | Mark Ellsworth Wassell, Carl Allison Perry | 2016-03-08 |