Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5791825 | Device and method for producing a containment barrier underneath and around in-situ buried waste | Bradley M. Gardner, Ann Marie Smith, Richard W. Hanson | 1998-08-11 |
| 5788422 | Underground barrier construction apparatus with soil-retaining shield | Bradley M. Gardner, Ann Marie Smith, Richard W. Hanson | 1998-08-04 |