Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8307856 | Double block and bleed plug | Kenneth L. Yeazel, Gregory L. Puckett | 2012-11-13 |
| 7841364 | Double block and bleed plug | Kenneth L. Yeazel, Gregory L. Puckett | 2010-11-30 |
| 6648562 | Apparatus for tapping a hole in a pipeline | Charles D. Calkins, Jerry Lee Dunn, David Albertson, Matthew W. James | 2003-11-18 |
| 5843271 | Plastic pipe butt fusion machine and cart assembly | Bill D. Andrew, Paul Hatch, William Joseph Tefet | 1998-12-01 |
| 5770006 | Butt fusion machine for manufacturing full size segemented pipe turns | Bill D. Andrew, Paul Hatch, William J. Tefft | 1998-06-23 |
| 5725724 | Plastic pipe facer for butt fusion application | Bill D. Andrew | 1998-03-10 |
| 5498197 | Hand-held blast cleaning machine | Jerry W. Roberts, James E. Riley, Scott T. Jednacz | 1996-03-12 |
| 4389157 | Retrieval and storage mechanism for use with an automated rotating storage unit | Clay Bernard, II, William F. Matheny, III, Charles M. Faith, Jerry Hauth | 1983-06-21 |