Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4513253 | Electronic amplifier having a transmission factor that is variable by means of a controllable voltage, specifically an expander | — | 1985-04-23 |
| 4490687 | Electronic amplifier | — | 1984-12-25 |
| 4441041 | Circuit arrangement for generating a direct control voltage which is dependent on an alternating voltage | — | 1984-04-03 |
| 4353035 | Circuit for compression or expansion of an electrical signal | — | 1982-10-05 |
| 4322636 | Circuit system for the generation of a direct control voltage dependent upon an alternating voltage | — | 1982-03-30 |
| 4321482 | Circuit system for the generation of a direct control voltage which is dependent on an alternating voltage | Jurgen Wermuth | 1982-03-23 |
| 4318009 | Circuit system for the generation of a direct control voltage depending upon an alternating voltage | — | 1982-03-02 |
| 4306202 | Compander | — | 1981-12-15 |
| 4278945 | Circuit for the generation of a control variable for the control of the transfer constant of electronically actuable amplifying and attenuating members | Jurgen Wermuth | 1981-07-14 |
| 4270103 | Amplifier having a variable propagation constant | — | 1981-05-26 |
| 4243944 | Circuit for automatic dynamic compression or expansion | — | 1981-01-06 |
| 4218662 | Circuit arrangement for optional dynamic compression or expansion | — | 1980-08-19 |
| 4181896 | Device for optional dynamic compression or expansion | — | 1980-01-01 |