Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885723 | Acoustic apparatus and method for detecting borehole wall discontinuities such as vertical fractures | Bronislaw Seeman | 1989-12-05 |
RH
R. Mark Havira
Overall (1989): #68,212 of 140,708Top 50%
1
Patents 1989