Complex sentence: The world's first all-transistor car radio, was developed and produced by Chrysler and Philco in 1955, used the high-frequency surface-barrier transistors in its circuitry design.
Split into simpler sentences: The world's first all-transistor car radio, was developed and produced by Chrysler and Philco in 1955. Philco was the manufacturer of these all-transistor car radios for the Chrysler Corporation and had also used its surface-barrier transistors in the radio's circuitry design.