Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4687067 | Crossflow rotary cone rock bit with extended nozzles | Richard D. Smith, Michael S. Oliver, Weng-Kwen Raymond Chia | 1987-08-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4687067 | Crossflow rotary cone rock bit with extended nozzles | Richard D. Smith, Michael S. Oliver, Weng-Kwen Raymond Chia | 1987-08-18 |