Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9821495 | Form for casting a concrete light pole base | — | 2017-11-21 |
| 9475215 | Form for casting a concrete light pole base | — | 2016-10-25 |
| 8268223 | Form and process for casting concrete blocks | — | 2012-09-18 |
| 6997427 | Form for casting concrete block column | — | 2006-02-14 |
| 6955015 | System for interconnecting wall blocks | — | 2005-10-18 |
| 6854702 | Form for manufacturing concrete blocks for freestanding walls | James A. Manthei | 2005-02-15 |
| 6835343 | Method for handling concrete retaining wall blocks | James A. Manthei | 2004-12-28 |
| 6715965 | Retaining wall blocks and retaining walls constructed from such blocks | James A. Manthei | 2004-04-06 |
| D486246 | Concrete cap for a wall | — | 2004-02-03 |
| 6679656 | Connection for geogrid to concrete block earth retaining walls | — | 2004-01-20 |
| D477419 | Face for a concrete wall block | — | 2003-07-15 |
| D477091 | Face for a concrete wall block | — | 2003-07-08 |