Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8307856 | Double block and bleed plug | Kenneth L. Yeazel, Richard L. Goswick | 2012-11-13 |
| 8047219 | Block and bleed plugging tool employing seals on a pipeline exterior | Tony R. Garrison | 2011-11-01 |
| 7841364 | Double block and bleed plug | Kenneth L. Yeazel, Richard L. Goswick | 2010-11-30 |
| 7766047 | Telescoping double blocking pipe plug | Tony R. Garrison | 2010-08-03 |
| 7281543 | Apparatus, systems and methods for plugging a high temperature pipe | Charles D. Calkins, Eric N. Freeman, Tony R. Garrison, Gary Goins, Phillip K. Morrison +3 more | 2007-10-16 |
| 7056027 | Bearing for a rotatable shaft subject to thermal expansion | — | 2006-06-06 |