Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5155428 | Overdischarge and overvoltage protection circuit for a battery in a portable and mobile communication system | — | 1992-10-13 |
| 5058150 | Automatic answering method for a vehicle radio-telephone and device therefor | — | 1991-10-15 |
| 4939470 | Circuit for generating dual-tone multi-frequency signals and high/low-tone signals | — | 1990-07-03 |