Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10988995 | Shutoff valve | Marcin K. Barker | 2021-04-27 |
| 10745982 | Power tong | Vladimir G. Pohnert | 2020-08-18 |
| 9010219 | Compact power tong | Vladimir G. Pohnert | 2015-04-21 |
| 8443700 | Tong assemblies | — | 2013-05-21 |
| 8418586 | Power tong with door jammer valve | Marcin K. Barker | 2013-04-16 |
| 6481655 | Rotor for a crushing machine | — | 2002-11-19 |
| 6394201 | Tubing spider | Vladimir G. Pohnert | 2002-05-28 |
| 6263763 | Power tong and backup tong system | Vladimir G. Pohnert, Marcin K. Barker | 2001-07-24 |
| 5839717 | Valve with improved shaft retainer | — | 1998-11-24 |
| 5144868 | Power tongs | — | 1992-09-08 |