Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5375659 | Sonde supported operating system for control of formation production fluid flow | Gregory N. Gilbert, Martin L. Tomek, William B. King, Jerry R. Bennett, Perry C. Shy | 1994-12-27 |
| 5355953 | Electromechanical shifter apparatus for subsurface well flow control | Perry C. Shy | 1994-10-18 |
| 5309988 | Electromechanical shifter apparatus for subsurface well flow control | Perry C. Shy | 1994-05-10 |