Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6604930 | Concrete block molding machinery | Howard N. Lumsden, Lee F. Marzean, Donald Robert Andor | 2003-08-12 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6604930 | Concrete block molding machinery | Howard N. Lumsden, Lee F. Marzean, Donald Robert Andor | 2003-08-12 |