Rudolph de Harak, also Rudy de Harak (April 10, 1924 – April 24, 2002), was an American graphic designer. De Harak was notable as a designer who covered a broad spectrum of applications with a distinctly modernist aesthetic. In 1971 he designed a three-story digital clock installed on the exterior of 200 Water St. (previously 127 John St.) in New York City. The clock consists of "72 square modules with numerals that light according to date, hour, minute and second". He also designed a neon-illuminated entrance and a scaffold covered with brightly covered canvas outside. (wikipedia.org)