![Telefunken](/logo/Telefunken.png)
Telefunken Licences GmbH
Quasi Parallel Sound Processing with Quadrature Intercarrier Demodulator
![ETC1](/logo/ETC1.png)
Unspecified
TELEFUNK ELECTRONIC CREATIVE TECHNOLOGIEN U2200B-FP
![Temic](/logo/Temic.png)
Temic Semiconductors
Tone Ringer Interface
![Temic](/logo/Temic.png)
Temic Semiconductors
Telephone Speech Circuit
![Telefunken](/logo/Telefunken.png)
Telefunken Licences GmbH
Quasi Parallel Sound Processing with Quadrature Intercarrier Demodulator
![Telefunken](/logo/Telefunken.png)
Telefunken Licences GmbH
Quasi Parallel Sound Processing with Quadrature Intercarrier Demodulator
![Temic](/logo/Temic.png)
Temic Semiconductors
Three-Tone Ringer for Telephone Sets
![Temic](/logo/Temic.png)
Temic Semiconductors
Low Voltage Speech Circuit with Tone Ringer Interface
![Telefunken](/logo/Telefunken.png)
Telefunken Licences GmbH
Quasi Parallel Sound Processing with Quadrature Intercarrier Demodulator