Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5769686 | Yo-yo having an improved axle and insert retainer | Thomas J. Van Dan Elzen | 1998-06-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5769686 | Yo-yo having an improved axle and insert retainer | Thomas J. Van Dan Elzen | 1998-06-23 |