Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6550514 | Indexer system for use with a plastic pipe butt-fusion machine | — | 2003-04-22 |
| 5843271 | Plastic pipe butt fusion machine and cart assembly | Richard L. Goswick, Paul Hatch, William Joseph Tefet | 1998-12-01 |
| 5788790 | Method for butt welding thermoplastic pipe including automatic drag compensation | — | 1998-08-04 |
| 5770006 | Butt fusion machine for manufacturing full size segemented pipe turns | Paul Hatch, Richard L. Goswick, William J. Tefft | 1998-06-23 |
| 5725724 | Plastic pipe facer for butt fusion application | Richard L. Goswick | 1998-03-10 |
| 5612499 | Method of inserting a sensor into a pipeline | Edward W. Levy | 1997-03-18 |
| 5531250 | Device for plugging the interior of a pipe | Eric N. Freeman, David Blevins, Gene R. Ralls, Buddy A. Wilson, Coy D. Osburn | 1996-07-02 |
| 5439331 | High pressure tapping apparatus | William D. Duwe, Michael L. Wilson | 1995-08-08 |