Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6729418 | Back reaming tool | Robert H. Slaughter, Jr., Vincent Shotton | 2004-05-04 |
| 6708786 | Mounting attachment and bearing system for an industrial earth-boring cutter | Vincent Shotton | 2004-03-23 |
| 6695079 | Dual-seal drill bit pressure communication system | Gary R. Portwood, Chris E. Cawthorne, Robert H. Slaughter, Jr., Roger Didericksen, Robert Denton | 2004-02-24 |
| 6679342 | Dual-seal drill bit pressure communication system | Gary R. Portwood, Chris E. Cawthorne, Robert Denton, Robert H. Slaughter, Jr., Roger Didericksen | 2004-01-20 |