Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5059471 | Inlaid tile | Michael H. McNally, Walter C. Timm, James A. Perrego | 1991-10-22 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5059471 | Inlaid tile | Michael H. McNally, Walter C. Timm, James A. Perrego | 1991-10-22 |