Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6581980 | Threaded connection with high compressive rating | Richard W. DeLange, Merle E. Evans, Darrell Scott Costa | 2003-06-24 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6581980 | Threaded connection with high compressive rating | Richard W. DeLange, Merle E. Evans, Darrell Scott Costa | 2003-06-24 |