Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7749116 | Panel of a ball for a ball game, a ball, and methods of making the same | Yuen Yuen Chang | 2010-07-06 |
| 7645203 | Game ball carcass, a game ball, and methods of making same | Margaret Yuen Yuen Chang | 2010-01-12 |