Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6834719 | Drillpipe sub | Keith Fritchley | 2004-12-28 |
| 6755257 | Drillpipe assembly and a method of deploying a logging tool | Simon Christopher Ash, Michael John Chaplain | 2004-06-29 |