Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667364 | "Downhole hydraulic pump apparatus having a ""free"" jet pump and safety valve assembly and method" | David P. O Mara | 1997-09-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667364 | "Downhole hydraulic pump apparatus having a ""free"" jet pump and safety valve assembly and method" | David P. O Mara | 1997-09-16 |