Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4265325 | Percussion rock bit | — | 1981-05-05 |
| 4249916 | Absorber tower isolation system | James M. Hurt, Jr. | 1981-02-10 |
| 4239711 | Absorber tower maintenance isolation system | James M. Hurt, Jr. | 1980-12-16 |