Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7328520 | Gage for measuring diameters | — | 2008-02-12 |
| 6755447 | Production riser connector | Edward M. Galle, Jr. | 2004-06-29 |
| 6494499 | Threaded connector for pipe | Edward M. Galle, Jr. | 2002-12-17 |
| 4914433 | Conductor system for well bore data transmission | — | 1990-04-03 |
| 4727942 | Compensator for earth boring bits | Anton F. Zahradnik | 1988-03-01 |
| 4630689 | Downhole pressure fluctuating tool | Billey E. Baker | 1986-12-23 |
| 4491428 | Earth boring drill bit with snap ring cutter retention | Bruce H. Burr, George E. Dolezal | 1985-01-01 |
| 4400024 | Nozzle retaining ring with crushed O-ring | Frank C. Ratcliff | 1983-08-23 |
| 4375242 | Sealed and lubricated rock bit with air protected seal ring | — | 1983-03-01 |
| 4236764 | Earth boring drill bit with snap ring cutter retention | — | 1980-12-02 |