Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7530222 | Hydraulic apparatus, system and method for positioning an engine exhaust flow control valve | David Parker, Michael J. Burkett | 2009-05-12 |
| 6854703 | Pressure regulating valve with adjustment features | David Parker | 2005-02-15 |