Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| D929894 | Refrigerator magnet | — | 2021-09-07 | |
| 4827808 | Rotor assembly for power tong | Charles W. Haynes | 1989-05-09 | $9,107,000 |
| 4250773 | Rotary tong incorporating interchangeable jaws for drill pipe and casing | Charles W. Haynes | 1981-02-17 | $2,432,000 |