Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5579387 | Apparatus for accessing function code in telephone | MAO-SUNG CHEN, Meng-Tsang Wu | 1996-11-26 |
| 5570418 | Device for detecting operation state of telephone hook switch | MAO-SUNG CHEN, Meng-Tsang Wu | 1996-10-29 |
| 5285495 | Push-button telephone dialing device with telephone hold function circuit | Meng-Tsang Wu | 1994-02-08 |