The company has a great history. It was formed in 1892 by the merger of Edison Electric Light Company (founded by Thomas Edison to sell his invention, the light bulb) and Thomson-Houston Electric Company.
The basic logo font face is still quite similar to what it was in 1892. Over time, a circle engulfing the company name has been added to the logo, which might be due to the increasing global presence and vision of the company. The current logo, which was designed by Wolff Olins, adds blue color to the logo instead of the black color which had been used in all the previous logos. Accompanied with the logo change was also a change in the tagline of the company from “We bring good things to life” to “Imagination at work”.