Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6697456 | Speech analysis based answer detection for IP based telephones | Norman C. Chan | 2004-02-24 |
| 6678374 | Tone based answer detection for IP based telephones | — | 2004-01-13 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6697456 | Speech analysis based answer detection for IP based telephones | Norman C. Chan | 2004-02-24 |
| 6678374 | Tone based answer detection for IP based telephones | — | 2004-01-13 |