Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294228 | Automatic sequencing system for earth drilling machine | Clyde A. Willis | 1994-03-15 |
| 4867236 | Compact casing tongs for use on top head drive earth drilling machine | Keith M. Haney | 1989-09-19 |
| 4593774 | Downhole bearing assembly | — | 1986-06-10 |
| 4407373 | Collapsible pedestal for drilling apparatus | Clyde A. Willis | 1983-10-04 |
| 4406098 | Drilling ramp | Pete E. Deaver, Odis F. Hamill | 1983-09-27 |
| 4366606 | Self-centering clamp for down-hole tubulars | Clyde A. Willis | 1983-01-04 |