Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9541212 | Tool-less valve stem connector assembly for a globe valve assembly | — | 2017-01-10 |
| 7575182 | Nozzle structure | — | 2009-08-18 |
| 7303017 | Perforating gun assembly and method for creating perforation cavities | James M. Barker, Duncan MacNiven | 2007-12-04 |
| 7172023 | Perforating gun assembly and method for enhancing perforation depth | James M. Barker, Duncan MacNiven | 2007-02-06 |