Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805156 | System for acoustically determining the quality of the cement bond in a cased borehole | George Attali, James R. Birchak | 1989-02-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805156 | System for acoustically determining the quality of the cement bond in a cased borehole | George Attali, James R. Birchak | 1989-02-14 |