Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649874 | Transparent ball with insert, and process of manufacture thereof | Stephen J. Headford, Ilse Treurnicht, Tom Clarke | 1997-07-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649874 | Transparent ball with insert, and process of manufacture thereof | Stephen J. Headford, Ilse Treurnicht, Tom Clarke | 1997-07-22 |