Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4780266 | Method for detecting drilling fluid in the annulus of a cased wellbore | Richard Carl Haut, William E. Kline | 1988-10-25 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4780266 | Method for detecting drilling fluid in the annulus of a cased wellbore | Richard Carl Haut, William E. Kline | 1988-10-25 |