Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6109376 | Face seal having strain induced face geometry | — | 2000-08-29 |
| 5875861 | Different stiffness energizers for MF seals | Jeffery E. Daly, Thomas Wick | 1999-03-02 |
| 5676214 | Flow channels for tooth type rolling cutter drill bits | James C. Walter | 1997-10-14 |
| 5465800 | Rolling cutter drill bits | Thomas Wick | 1995-11-14 |
| 5096005 | Hydraulic action for rotary drill bits | Craig Ivie | 1992-03-17 |
| 5029656 | Nozzle means for rotary drill bits | Craig Ivie | 1991-07-09 |
| 4991671 | Means for mounting a roller cutter on a drill bit | James C. Walter | 1991-02-12 |
| 4911255 | Means for retaining roller cutters on rotary drill bit | — | 1990-03-27 |