Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5651420 | Drilling apparatus with dynamic cuttings removal and cleaning | Gordon A. Tibbitts | 1997-07-29 |
| 5590729 | Superhard cutting structures for earth boring with enhanced stiffness and heat transfer capabilities | Gordon A. Tibbitts, Wayne R. Hansen | 1997-01-07 |