Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7810586 | Sectional drive and coupling system | Ruben C. Boyter | 2010-10-12 |
| 6523624 | Sectional drive system | Ruben C. Boyter | 2003-02-25 |
| 5911283 | Sectional drive system | Ruben C. Boyter | 1999-06-15 |
| 5699866 | Sectional drive system | George R. Markiel, Ruben C. Boyter | 1997-12-23 |
| 4368786 | Downhole drilling apparatus | — | 1983-01-18 |