Telefunken was a German radio and television producer, founded in Berlin in 1903 as a joint venture between Siemens & Halske and the Allgemeine Elektrizitäts-Gesellschaft (AEG) . Prior to World War I the company set up the first world wide network of communications and was the first in the world to sell electronic televisions with cathode ray tubes, in Germany in 1934.

Allgemeine Elektricitäts-Gesellschaft AG was a German producer of electrical equipment. It was founded in 1883 by Emil Rathenau as the Deutsche Edison-Gesellschaft für angewandte Elektricität in Berlin.