Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D566298 | Stackable precast concrete stairwell unit | Joseph A. Bornhorst, James J. Griffin, Benson T. Rhoads, David J. Settles | 2008-04-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D566298 | Stackable precast concrete stairwell unit | Joseph A. Bornhorst, James J. Griffin, Benson T. Rhoads, David J. Settles | 2008-04-08 |