Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8036399 | Audio output apparatus capable of suppressing pop noise | Li-Chang Lai, Shih-Yuan Chang | 2011-10-11 |
| 6259589 | Protection apparatus applied to a telephone line | — | 2001-07-10 |