Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819726 | Method for indicating the position of a cement wiper plug prior to its bottomhole arrival | Robert M. Beirute | 1989-04-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819726 | Method for indicating the position of a cement wiper plug prior to its bottomhole arrival | Robert M. Beirute | 1989-04-11 |