Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D448492 | Retaining wall block with side openings | — | 2001-09-25 |
| 6287054 | Plantable wall block assembly and retaining wall formed therefrom | Philip D. Egan, Philip M. Taylor | 2001-09-11 |
| D428499 | Retaining wall block with side openings | — | 2000-07-18 |