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Albert Butz of the Thermo-Electric Regulator Co., Minneapolis, is the original creator in 1885 of the "damper flap" which the company Honeywell based its roots from.
More information can be found at: http://www.honeywell.com/sites/honeywell/ourhistory.htm http://www.computermuseum.li/Testpage/HoneywellBull-Chrono.htm
Hope this helps and good luck!
AnswerIt was invented in 1883 by Warren S. Johnson. http://www.america.gov/st/business-english/2008/July/20080710104405saikceinawz0.5803339.html http://www.johnsoncontrols.com/publish/us/en/about/history.html
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