Issued Patents 2017
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9834995 | Horizontal directional drill pipe drive connection with locking feature | Floyd R. Gunsaulis, Max A. Metcalf | 2017-12-05 |
| 9803433 | Dual member pipe joint for a dual member drill string | Cody L. Sewell | 2017-10-31 |
| 9765574 | Dual-member pipe joint for a dual-member drill string | Cody L. Sewell | 2017-09-19 |
| 9611695 | Dual pipe drilling head with improved bearing retention structure | Travis W. Woodson, Curtis Johnson | 2017-04-04 |