Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7201240 | Biased insert for installing data transmission components in downhole drilling pipe | David R. Hall, Michael Briscoe, Tyson J. Wilde | 2007-04-10 |
| 7165633 | Drilling fluid filter | David R. Hall, Joe Fox | 2007-01-23 |