Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061206 | Casing thickness evaluation method | Edward Domangue, Douglas J. Patterson, Joseph Gregory Barolak | 2011-11-22 |
| 7911877 | Active noise cancellation through the use of magnetic coupling | Douglas J. Patterson, Xiao Ming Tang | 2011-03-22 |