This site shows the history of the electricity meter from the origins to modern times. The history of meter companies is interesting and is full of names such as Westinghouse, General Electric, Sangamo, and Duncan. Today we have Elster, GE, Itron, Landis+Gyr, etc.
Pittsburgh was the site of the first licensed, commercial radio station. "This is KDKA, of the Westinghouse Electric and Manufacturing Company, in East Pittsburgh, Pennsylvania. We shall now broadcast the election returns." —Leo Rosenburg, on the very first radio broadcast by KDKA, November 2, 1920