Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9909417 | Angled degradation pick | David R. Hall, Ronald B. Crockett, Dwain Norris, Gary Condon, Gary Peterson | 2018-03-06 |
| 7626399 | Broken lead detection | Paul Thomas Parnell, Stephen Hengen | 2009-12-01 |