Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9885353 | Pressure relief mechanism for linear actuator well pump | Steven K. Tetzlaff, Gary L. James | 2018-02-06 |
| 9777560 | Auxiliary face seal for submersible well pump seal section | Steven K. Tetzlaff, Kevin R. Bierig, Daniel Shaffer | 2017-10-03 |
| 9726166 | Magnetic rotational to linear actuator for well pumps | Steven K. Tetzlaff, Peter F. Lawson, Kevin R. Bierig, Sean A. Cain | 2017-08-08 |
| 9080436 | Connection assembly for through tubing conveyed submersible pumps | Steven K. Tetzlaff | 2015-07-14 |
| 9046090 | High efficiency impeller | Alan Lin Kao, David Chilcoat | 2015-06-02 |
| 8919432 | Apparatus, system and method for reducing gas intake in horizontal submersible pump assemblies | Steven K. Tetzlaff, Wesley John Nowitzki | 2014-12-30 |
| 8821137 | Modular down hole gauge for use in retrievable electric submersible pump systems with wet connect | Steven K. Tetzlaff, Ken Bebak, Robert H. McCoy | 2014-09-02 |
| 7921908 | Gas restrictor for horizontally oriented pump | Steven K. Tetzlaff | 2011-04-12 |