Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9143590 | Headset base with display and communications base | Tomasz Goldman, Claus Tondering, Bo Schmidt, Stefan Heise | 2015-09-22 |
| 8838029 | Headset system with two user interfaces | Tomasz Goldman, Claus Tondering | 2014-09-16 |
| 5006727 | Circuit arrangement for adjusting the amplitude of a signal | Ernst P. Ragosch | 1991-04-09 |
| 4827153 | Circuit arrangement for optionally connecting signal sources to a signal sink | Wolfgang Weltersbach | 1989-05-02 |
| 4588908 | N-ary input to n-1 binary outputs level shift circuit for I.sup.2 L | Joachim Reich | 1986-05-13 |
| 4461021 | Circuit arrangement for receiving two modulating signals, more specifically for television | Ulf Buhse | 1984-07-17 |
| 4405834 | Circuit for receiving two-tone/stereophonic programs | Ulf Buhse | 1983-09-20 |