Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771780 | Tri-functional dual earphone device | His-Yuan Lai | 2004-08-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6771780 | Tri-functional dual earphone device | His-Yuan Lai | 2004-08-03 |