Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8083139 | Voice device for automatic vending machine | — | 2011-12-27 |
| 7182198 | Power control circuit for use in a vending machine | Tien-Yuan Chien, Yeuh-Ping Hsu | 2007-02-27 |
| 6991129 | Power control circuit for use in a vending machine | Tien-Yuan Chien, Yeuh-Ping Hsu | 2006-01-31 |