Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5567138 | Method and apparatus for limiting eccentric deviations of a rotating polished rod in rotary pumping applications | — | 1996-10-22 |
| 5401104 | Rod guide assembly for rotary applications | — | 1995-03-28 |
| 5217068 | Stuffing box | — | 1993-06-08 |
| 5058668 | Rod guide bearing assembly for oil well pumping apparatus | — | 1991-10-22 |
| 4896367 | Anti-corrosive stuffing box assembly | Ron Belanger | 1990-01-23 |