Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10066446 | Tapered spline connection for drill pipe, casing, and tubing | William James Hughes, Gary Briggs | 2018-09-04 |
| 10060197 | Tapered spline connection for drill pipe, casing, and tubing | William James Hughes | 2018-08-28 |
| 10006255 | Tapered spline connection for drill pipe, casing, and tubing | William James Hughes | 2018-06-26 |