Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6955234 | Auger bit | — | 2005-10-18 |
| 6675916 | Boring machine and auger bit | — | 2004-01-13 |
| 5900085 | Method of manufacturing a geosynthetic clay liner | Mark Clarey | 1999-05-04 |
| 5584609 | Geosynthetic clay liner and method of manufacture | Mark Clarey | 1996-12-17 |