It was also home to Grigsby-Grunow, which manufactured radios under the "Majestic" brand until the company failed in 1934. (Majestic Radio and Television Corporation preserved the Majestic name, while General Household Utilities kept Grunow alive.) Chicago also hosted E. H. Scott's Scott Transformer Company, which introduced a high-grade radio in 1928, and grew into Scott Radio Laboratories; this was located at 4450 Ravenswood Avenue in 1946, and produced "very expensive, beautifully-designed, chrome-plated chassis". It added "a line of high-quality television sets in 1949". Other entrants in this business were Zenith, which started life there in 1918, entering auto radios in the 1930s, and Galvin Manufacturing Corporation, which started manufacturing power supplies in 1928 and went on to automobile radios under the Motorola marque in 1930, as well as Walkie-talkie and Handie-Talkie and for the Army.