Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687792 | Drill pipe float valve and method of manufacture | Randle E. Ford | 1997-11-18 |
| 5623966 | Flow control choke with shutoff seal | — | 1997-04-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5687792 | Drill pipe float valve and method of manufacture | Randle E. Ford | 1997-11-18 |
| 5623966 | Flow control choke with shutoff seal | — | 1997-04-29 |