Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D727485 | Cast concrete fireplace | James A. Manthei | 2015-04-21 |
| 8992814 | Method for dry casting concrete blocks | — | 2015-03-31 |
| D674511 | Front face of a concrete block | — | 2013-01-15 |
| D674512 | Front face of a concrete block | — | 2013-01-15 |
| 7687006 | Form for casting concrete blocks and other objects | James A. Manthei | 2010-03-30 |
| 7618578 | Method and apparatus for forming concrete blocks | James A. Manthei | 2009-11-17 |
| D589631 | Concrete block simulating natural stone | James A. Manthei | 2009-03-31 |
| D589161 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |
| D589162 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |
| D589163 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |
| D589164 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |
| D589165 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |
| D589166 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |
| D589167 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |
| D589168 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |
| D589169 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |
| D589160 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |
| D589159 | Concrete block simulating natural stone | James A. Manthei | 2009-03-24 |