Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9777560 | Auxiliary face seal for submersible well pump seal section | Steven K. Tetzlaff, Lance T. Robinson, Daniel Shaffer | 2017-10-03 |
| 9726166 | Magnetic rotational to linear actuator for well pumps | Steven K. Tetzlaff, Peter F. Lawson, Lance T. Robinson, Sean A. Cain | 2017-08-08 |