Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6406070 | Casing drilling connector with low stress flex groove | Richard W. DeLange, Ed Evans | 2002-06-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6406070 | Casing drilling connector with low stress flex groove | Richard W. DeLange, Ed Evans | 2002-06-18 |