Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5405457 | High strength sucker rod coupling | Dean E. Hermanson, Donald F. Hallden | 1995-04-11 |
| 5405461 | Method of producing high Strength sucker rod coupling | Dean E. Hermanson, Donald F. Hallden | 1995-04-11 |
| 5334268 | Method of producing high strength sucker rod coupling | Dean E. Hermanson, Donald F. Hallden | 1994-08-02 |