Willis Carrier
Willis Haviland Carrier (November 26, 1876 – October 7, 1950) was an American engineer, best known for inventing modern air conditioning. Carrier invented the first electrical air conditioning unit in 1902. In 1915, he founded Carrier Corporation, a company specializing in the manufacture and distribution of heating, ventilation, and air conditioning (HVAC) systems.
Claude Gordon Douglas
Claude Gordon Douglas FRS (26 February 1882 in Leicester – 23 March 1963 in Radcliffe Infirmary, Oxford) was a British physiologist, known for his research on respiratory physiology and the invention of the Douglas Bag.