While developing a dehumidifier for the Buffalo Forge Company in the early 1900s, American engineer Willis Carrier discovered that circulating air over cold pipes not only removes water from the air but also cools it. He became the father of air conditioning, holding over 80 patents and dominating air conditioner manufacturing with his company, Carrier Corporation. He invented a practical air conditioning system for skyscrapers in 1939. What did he call his invention when he patented it in 1906? Discuss
Source: The Free Dictionary