Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5176219 | Method of sealing holes in the ground | Jack H. Cole, C. Michael Swindoll | 1993-01-05 |
| 5172450 | Shaft cleaning and decontamination apparatus | Jack H. Cole, C. Michael Swindoll | 1992-12-22 |
| 4739654 | Method and apparatus for downhole chromatography | Paul E. Pilkington, Marvin C. Allen | 1988-04-26 |