Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5558172 | Earth boring bit and lubricator compensation therefor | — | 1996-09-24 |
| 5490570 | Earth boring bit and lubricator/compensator therefor | — | 1996-02-13 |
| 5452770 | Rock bit and improved forging method for manufacturing thereof | — | 1995-09-26 |
| 4942930 | Lubrication system for an earth boring drill bit and methods for filling and retrofit installing thereof | — | 1990-07-24 |
| 4793426 | Drill bit with covered ring nozzle retainer | — | 1988-12-27 |
| 4386667 | Plunger lubricant compensator for an earth boring drill bit | — | 1983-06-07 |
| 4276946 | Biased lubricant compensator for an earth boring drill bit | — | 1981-07-07 |