He developed Electrical Porcelain with transmission engineers at GE. His family continued to work at Building 68 in Schenectady for decades. William's son Frank Cermak advanced insulator design into the mid 20th century.
When Rex Harrison accepted his Academy Award for My Fair Lady (1964), he dedicated it to his two fair ladies, Audrey Hepburn and Julie Andrews both who had played Eliza Doolittle with him.
Great singing in the clip above, huh? Well, that's probably why Audrey Hepburn didn't get a Best Actress Academy Award nomination for My Fair Lady. Audrey Hepburn's landing the role of Eliza Doolittle in Warner Bros.' 1964 film version of Alan Jay Lerner and Frederick Loewe's My Fair Lady sparked a major outcry