Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5405457 | High strength sucker rod coupling | Donald F. Hallden, Horace G. Isom | 1995-04-11 |
| 5405461 | Method of producing high Strength sucker rod coupling | Donald F. Hallden, Horace G. Isom | 1995-04-11 |
| 5334268 | Method of producing high strength sucker rod coupling | Donald F. Hallden, Horace G. Isom | 1994-08-02 |
| 4341242 | Loading arm | — | 1982-07-27 |
| 4290463 | Loading arm | Bernard J. DeGeorge, Carlos Tomas | 1981-09-22 |