Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885723 | Acoustic apparatus and method for detecting borehole wall discontinuities such as vertical fractures | R. Mark Havira | 1989-12-05 |
| 4827457 | Method and apparatus for acoustically measuring the transverse dimensions of a borehole | Georges L. F. Benoit | 1989-05-02 |