Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5252017 | Setback retaining wall and concrete block and offset pin therefor | — | 1993-10-12 |
| D337721 | Offset pin for interconnecting upper and lower blocks in a concrete block wall | — | 1993-07-27 |
| 5161918 | Set-back retaining wall and concrete block and offset pin therefor | — | 1992-11-10 |