Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174396 | Cutter assemblies for rotary drill bits | Malcolm R. Taylor | 1992-12-29 |
| 4991670 | Rotary drill bit for use in drilling holes in subsurface earth formations | John M. Fuller | 1991-02-12 |
| 4987800 | Cutter elements for rotary drill bits | Malcolm R. Taylor, Phillip Bex | 1991-01-29 |
| 4889017 | Rotary drill bit for use in drilling holes in subsurface earth formations | John M. Fuller | 1989-12-26 |