Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4346594 | Method for locating the depth of a drill string washout or lost circulation zone | — | 1982-08-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4346594 | Method for locating the depth of a drill string washout or lost circulation zone | — | 1982-08-31 |