Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4912307 | Device for keeping score during a scoring game | Donna E. Verdis | 1990-03-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4912307 | Device for keeping score during a scoring game | Donna E. Verdis | 1990-03-27 |