Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872509 | Oil well production system using a hollow tube liner | Robert Wayne Dickinson, Randall R. Anderson, Eric W. Dickinson, Robert D. Wilkes | 1989-10-10 |
| 4865128 | Gravel packing system for a production radial tube | Randall R. Anderson, Robert Wayne Dickinson, Eric W. Dickinson, Herman Dykstra | 1989-09-12 |
| 4852668 | Hydraulic drilling apparatus and method | Robert Wayne Dickinson, Sherman C. May, Charles S. Mackey | 1989-08-01 |