Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7373980 | Mono-trip cement thru completion | Keith E. Lewis, Anthony Orchard, Joseph C. H. Yeo, Walter Chapman, James Holt | 2008-05-20 |
| 7069992 | Mono-trip cement thru completion | Keith E. Lewis, Anthony Orchard, Joseph C. H. Yeo, Walter Chapman, James Holt | 2006-07-04 |