Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8634274 | Spindle for mud pulse telemetry applications | Paul L. Camwell, David A. Switzer, Anthony R. Dopf | 2014-01-21 |
| 8174929 | Spindle for mud pulse telemetry applications | Paul L. Camwell, David A. Switzer, Anthony R. Dopf | 2012-05-08 |