Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5251700 | Well casing providing directional flow of injection fluids | Joseph M. Nelson | 1993-10-12 |
| 5011329 | In situ soil decontamination method and apparatus | Joseph M. Nelson | 1991-04-30 |