Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6769666 | Variable port valve plug | Randy Hall | 2004-08-03 |
| 6698449 | Replaceable valve seat ring with enhanced flow design | Randy Hall, Mark Stiehl, Carl D. Miller | 2004-03-02 |
| 6695000 | Control valve pressure bleed inspection port | Randy Hall, Mark Stiehl | 2004-02-24 |