Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9131301 | Speaker enclosure and method for fabricating the same | Heng-Tzu Tseng, Chao-Liang Yin | 2015-09-08 |
| 5120226 | Toy and teaching aid combination | — | 1992-06-09 |
| 4725237 | Children's educational apparatus | — | 1988-02-16 |