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Wall Mounted Telephone Apparatus

Wall Mounted Telephone Apparatus
C.Lorenz Germany, 1904 y.

Device with induction calling and micro-telephone headset. The microphone used 0.3mm-1.0mm carbon balls. The existing model, with separate microphone and speaker, was taken as a guide but the top part (with microphone) was removed. In this way, with the installment of a micro-telephone headset, the quality of received and transmitted information was significantly improved. Used in Germany in postal services, military and government institutions, as well as by private individuals.