Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5940498 | Electronic voice circuit configuration | — | 1999-08-17 |
| 5442695 | Ringer circuit | Emil Navratil | 1995-08-15 |
| 5402017 | Controllable circuit configuration for compensating fluctuations in an amplifier | Manfred Lindner, Emil Navratil | 1995-03-28 |
| 4837827 | Method for transmitting two independent types of information and device for implementing the method | Manfred Lindner | 1989-06-06 |
| 4695804 | Apparatus for generating a multi-frequency signal | Manfred Lindner | 1987-09-22 |
| 4446485 | Semiconductor circuit with clock-controlled charge displacement devices | — | 1984-05-01 |
| 4399518 | Monolithically integrated semiconductor circuit | — | 1983-08-16 |