Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4702692 | Air reduction control for oil-treating vessels | Virgil D. Burns | 1987-10-27 |
| 4440231 | Downhole pump with safety valve | — | 1984-04-03 |
| 4316417 | Welded side frame column wear plate | — | 1982-02-23 |