Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6427725 | Pipeline lateral packer and felt combinations and methods therefor | Eric G. VanderLans, Victor F. Schuh, Stephen L. Thomas | 2002-08-06 |
| 5785090 | Pipeline stopper plug and method therefore | — | 1998-07-28 |
| 5379802 | Pipeline stopper plug | — | 1995-01-10 |
| 4964439 | Pipe plug with circumferential suction cups | — | 1990-10-23 |
| 4421698 | Sealing device for use in grouting pipe joints and method of using same | — | 1983-12-20 |
| 4182642 | Pipeline joint tester | — | 1980-01-08 |