Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11053656 | Method of making molded concrete blocks having simulated brick or stone outer surfaces | Geoffrey S. Parrington, Dion T. DeMeyer | 2021-07-06 |
| 10895055 | Molded concrete blocks having simulated brick or stone outer surfaces | Geoffrey S. Parrington, Dion T. DeMeyer | 2021-01-19 |