Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6661891 | Method and apparatus for detecting an activation tone | Vijayakumaran V. Nair, Yan Zhou | 2003-12-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6661891 | Method and apparatus for detecting an activation tone | Vijayakumaran V. Nair, Yan Zhou | 2003-12-09 |