Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6378614 | Method of landing items at a well location | William C. Shafer, Norman A. Henry | 2002-04-30 |
| 6364012 | Drill pipe handling apparatus | William C. Shafer, Norman A. Henry | 2002-04-02 |
| 6349764 | Drilling rig, pipe and support apparatus | William C. Shafer, Norman A. Henry | 2002-02-26 |