Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5755297 | Rotary cone drill bit with integral stabilizers | John Randolph Young, Norman Gair Mitchell, Paul Ronald Riederer, Alan D. Huffstutler | 1998-05-26 |
| 5755301 | Inserts and compacts with lead-in surface for enhanced retention | Raymond Joseph Love | 1998-05-26 |
| D384084 | Rotary cone drill bit | Alan D. Huffstutler | 1997-09-23 |
| 5553681 | Rotary cone drill bit with angled ramps | Alan D. Huffstutler | 1996-09-10 |
| 5547033 | Rotary cone drill bit and method for enhanced lifting of fluids and cuttings | — | 1996-08-20 |
| D372253 | Support arm and rotary cone for modular drill bit | Alan D. Huffstutler, Michael S. Beaton, Jay S. Bird | 1996-07-30 |