deaths
George H. Heilmeier, American engineer (born 1936)
Related Wikipedia articles
George H. Heilmeier
American engineer and businessman (1936-2014)
George Harry Heilmeier was an American engineer, manager, and a pioneering contributor to liquid crystal displays (LCDs), for which he was inducted into the National Inventors Hall of Fame. Heilmeier's work is an IEEE Milestone.Source: Wikipedia (CC BY-SA)
April 21
Day of the year
April 21 is the 111th day of the year in the Gregorian calendar; 254 days remain until the end of the year.Source: Wikipedia (CC BY-SA)