Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6912823 | Multi-channel retaining wall block and system | Robert J. Race | 2005-07-05 |
| 6893192 | Retaining wall block system | — | 2005-05-17 |
| 6854231 | Multi-channel retaining wall block and system | Robert J. Race | 2005-02-15 |
| D501935 | Wall block | William B. Dawson | 2005-02-15 |