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 | Roger M. Stark, Carrie Bartkowiak, John Brosnahan | 2021-10-26 |
| 10954938 | Valve seats and valve assemblies for fluid end applications | Roger M. Stark, Carrie Bartkowiak, John Brosnahan | 2021-03-23 |
| 10851775 | Valve seats and valve assemblies for fluid end applications | Roger M. Stark, Carrie Bartkowiak, John Brosnahan | 2020-12-01 |
| 10344757 | Valve seats and valve assemblies for fluid end applications | Roger M. Stark, Carrie Bartkowiak, John Brosnahan | 2019-07-09 |
| 7833019 | Spring beam wafer connector | Andrew Miles Wallace | 2010-11-16 |
| 6115986 | Stackable box stud | — | 2000-09-12 |
| 5327695 | Tab and slot connector means | — | 1994-07-12 |