Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5642968 | Modular block retaining wall construction and components | Peter L. Anderson, Michael J. Cowell | 1997-07-01 |
| 5624211 | Modular block retaining wall construction and components | Peter L. Anderson, Michael J. Cowell | 1997-04-29 |
| 5622455 | Earthen work with wire mesh facing | Peter L. Anderson, Michael J. Cowell | 1997-04-22 |