Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9309720 | Double shaft drilling apparatus with hanger bearings | Mark Chustz, Joe Rivas, III | 2016-04-12 |
| 9051787 | Quick connect coupling for cementing operations and the like | David F. Laurel, Charles J. Pate, II, Kurt R. Koenig | 2015-06-09 |