Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6698449 | Replaceable valve seat ring with enhanced flow design | Randy Hall, Ronald Burr, Carl D. Miller | 2004-03-02 |
| 6695000 | Control valve pressure bleed inspection port | Randy Hall, Ronald Burr | 2004-02-24 |