Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061199 | Measurement systems having seals with pressure relief | Kevin G. Hafer, John Emiljan Naghski, Travis Darrell Hopkins | 2011-11-22 |
| 7957223 | Ultrasonic ranging in the near zone | Kevin G. Hafer | 2011-06-07 |