Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6834720 | Method and apparatus for injecting particulate media into the ground | Brian Dwyer, Stephen Dwyer, Francine S. Vigil | 2004-12-28 |
| 6357968 | Method and apparatus for constructing an underground barrier wall structure | Brian Dwyer, Stephen Dwyer | 2002-03-19 |