Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839635 | Signboard for displaying optical images | Lee Harris, Elizabeth A. Midwinter | 1989-06-13 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839635 | Signboard for displaying optical images | Lee Harris, Elizabeth A. Midwinter | 1989-06-13 |