Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4445402 | Power tong and back-up tong assembly | Patrick R. Callihan | 1984-05-01 |
| 4350062 | Power tong | Terence D. McCoy, Jiri Dlask | 1982-09-21 |
| 4273010 | Power tong | Terence D. McCoy, Jiri Dlask | 1981-06-16 |
| 4266450 | Power tong assembly | Terence D. McCoy | 1981-05-12 |