Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839644 | System and method for communicating signals in a cased borehole having tubing | Kambiz A. Safinya | 1989-06-13 |
RM
Roger W. McBride
Overall (1989): #62,187 of 140,708Top 45%
1
Patents 1989