Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11156221 | Valve seats and valve assemblies for fluid end applications | Carrie Bartkowiak, John Brosnahan, Michael Kelly | 2021-10-26 |
| 10954938 | Valve seats and valve assemblies for fluid end applications | Carrie Bartkowiak, John Brosnahan, Michael Kelly | 2021-03-23 |
| 10851775 | Valve seats and valve assemblies for fluid end applications | Carrie Bartkowiak, John Brosnahan, Michael Kelly | 2020-12-01 |
| 10662716 | Thin-walled earth boring tools and methods of making the same | Paul D. Prichard, John Brosnahan | 2020-05-26 |
| 10344757 | Valve seats and valve assemblies for fluid end applications | Carrie Bartkowiak, John Brosnahan, Michael Kelly | 2019-07-09 |
| 8922231 | Method and apparatus for indexing an adjustable test probe tip | Chris W. Lagerberg | 2014-12-30 |
| 8154316 | Method and apparatus for indexing an adjustable test probe tip | Chris W. Lagerberg | 2012-04-10 |