Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7013971 | Reverse circulation cementing process | James E. Griffith, Edgar J. Liegis, Randy D. Humphrey, John L. Dennis, Jr. | 2006-03-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7013971 | Reverse circulation cementing process | James E. Griffith, Edgar J. Liegis, Randy D. Humphrey, John L. Dennis, Jr. | 2006-03-21 |