Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D898884 | Frame for HVAC unit | Sean David Skiver, Dean F. Anderson | 2020-10-13 |
| 6138778 | Rock bit lubricant relief valve | Walter S. Dillard | 2000-10-31 |
| 5853245 | Rock bit cutter retainer with differentially pitched threads | — | 1998-12-29 |
| 5775803 | Automatic cementing system with improved density control | Clifford Stanley Montgomery, Michael Dearing, Bruce A. Vicknair, Robert Allen Baten, Greg L. Cedillo +1 more | 1998-07-07 |
| 5624182 | Automatic cementing system with improved density control | Michael Dearing, Bruce A. Vicknair, Robert Allen Baten, Greg L. Cedillo, John Howard Craig | 1997-04-29 |