Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4715442 | Apparatus for servicing tubular strings in subterranean wells | John E. Kahil, Kirby R. Harrell | 1987-12-29 | $21,449,000 |
| 4710712 | Method and apparatus for measuring defects in ferromagnetic elements | James E. Bradfield, John E. Kahil, Gordon L. Moake, Marvin Milewits, Curtis W. Bolton, III +2 more | 1987-12-01 | $9,878,000 |
| 4492115 | Method and apparatus for measuring defects in ferromagnetic tubing | John E. Kahil, James E. Bradfield | 1985-01-08 |