Issued Patents 2017
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9732560 | Drilling tool and apparatus | Christopher R. Fontana, Keith A. Hoelting | 2017-08-15 |
| 9624730 | Hard facing configuration for a drilling tool | Keith A. Hoelting, Chris Fontana | 2017-04-18 |
| 9611698 | Hole opener bearing arrangement | John P. Maher | 2017-04-04 |
| 9605491 | Tapered thread configuration with improved durability | Michael D. Langenfeld | 2017-03-28 |