Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11654583 | Valve operating device having a movable arm for use in exercising valves | Mark W. Wozniak | 2023-05-23 |
| 11344959 | Cutting apparatus including a visual tension indicator mechanism | Kenneth R. Pierce, Michael W. Gearhart, Mark W. Wozniak | 2022-05-31 |
| 10562117 | Cutting apparatus including a liquid spray system | Kenneth R. Pierce, Michael W. Gearhart, Mark W. Wozniak | 2020-02-18 |
| 10434589 | Cutting apparatus including a wire cutting member | Kenneth R. Pierce, Michael W. Gearhart, Mark W. Wozniak | 2019-10-08 |
| 9889575 | Wire saw for cutting pipe | Michael W. Gearhart | 2018-02-13 |
| 8961077 | Severing and beveling tool | — | 2015-02-24 |
| 8851121 | Torque multiplier for valve turning machine | Scott Ferrar, Greg J. Drzewiecki | 2014-10-07 |
| 5823255 | Tubular casing cutter | Scott Ferrar | 1998-10-20 |
| 5054342 | Pipe machining apparatus | Keith P. Polifka | 1991-10-08 |