Ericsson
Universal Transmission Circuit
Ericsson
Universal Speech Circuit
Ericsson
Voice-switched Speakerphone Circuit with built in loudspeaker amplifier
Ericsson
Universal Speech Circuit
Ericsson
Voice - switched 2-channel Circuit with loudspeaker amplifier
Ericsson
Speech Circuit for constant current feeding systems
Ericsson
Integrated circuit for transformerless driving of battery powered EL (electroluminicent) lamps
Ericsson
Voice-switch circuit for Handsfree speakerphone TAM
Ericsson
Universal Speech Circuit
English