After 1971, the remains of Philco became Aeroneutronic Ford for a year, and then Ford Aerospace and Communications until 1990, when Ford sold the remaining aerospace operations to Loral. The company operated as Philco-Ford until 1975 but Ford dropped the semiconductor operations in 1971. Ford bought Philco in 1961 and then slowly tired of the brand. Philco licensed this technology to other companies including Sprague and Semiconductors Limited, a division of the British-based Plessey Company. Philco developed a superior high-frequency alloy-junction transistor structure, called the surface-barrier transistor, with a correspondingly high-tech manufacturing process, in 1953. The company started making radios in 1926 and car radios in 1930. The Philco brand name first appeared in 1919.
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