 In 1949 the firm became nationalized as a "VEB-Volkseigener Betrieb" and named from 1950 on "VEB Fernmeldewerk, Berlin Treptow (RFFT)".Volkseigener Betrieb means that the factory was owned by the people for the people (Communism)

In 1948 Erich, and Fritz Graetz founded a new company in Altena, Germany known by the name "Graetz AG", which was successor to the lost family company in Berlin.The new company produced mainly radios, and televisions.