Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8573309 | Liquid rod pump and method | — | 2013-11-05 |
| 4861239 | High efficiency pump method and apparatus with hydraulic actuation | Graham C. Thomson, III, Richard J. Reynaud | 1989-08-29 |
| 4616981 | Pumping apparatus with a down-hale spring loaded piston actuated by fluid pressure | Graham C. Thomson, III, Richard J. Reynaud | 1986-10-14 |