Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5416316 | Optical sensor arrangement for presence detection with variable pulse repetition frequency | — | 1995-05-16 |
| 4789897 | Frequency converting apparatus for converting an RF television signal to a video signal employing low IF techniques | Dietmar Ehrhardt | 1988-12-06 |
| 4782385 | Frequency conversion of an RF signal transmitted for color-television receivers | Gerhard Gunter, Hermannus Schat, Herbert Elmis, Bernd Novotny, Dietmar Ehrhardt | 1988-11-01 |
| 4710814 | Television sound receiving circuit for at least one sound channel contained in an RF signal | Gerhard-Guenter Gassmann, Hermannus Schat, Herbert Elmis, Bernd Novotny, Dietmar Ehrhardt | 1987-12-01 |
| 4683444 | Generator circuit for generating two sinusoidal signals with a phase difference of 90 degrees | — | 1987-07-28 |