Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047305 | Vacuum feed supply system for drilling fluid additives | William M. Dye, John B. Trenery | 2011-11-01 |
| 7712551 | Vacuum feed supply system for drilling fluid additives | William M. Dye, John B. Trenery | 2010-05-11 |