Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837518 | Method and apparatus for measuring the electrical resistivity of geologic formations through metal drill pipe or casing | Michael F. Gard, James D. Klein | 1989-06-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837518 | Method and apparatus for measuring the electrical resistivity of geologic formations through metal drill pipe or casing | Michael F. Gard, James D. Klein | 1989-06-06 |