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Desk Telephone Apparatus

Desk Telephone Apparatus
Cvitush & Cо Germany, 1900 y.

This device had a microphone and local electric network fed battery and induction calling. Used carbon microphone and Siemens spoon-shaped electromagnetic telephone (hearing device). Designed by RTV, the German Telegraph Authority (Reichs-Telegraphen-Verwaltung). E. Cvitush in 1895. Used at railways and other institutions in Germany at the beginning of the 20th Century.