Timeline...

May 22, 1922 With a boxing match thrown in to guarantee good attendance, Carrier introduces the first centrifugal refrigerating machine.
May 30, 1925 Rivoli Theater in New York City is air conditioned.
1925 U.S.S. Wyoming is the first ship equipped with a centrifugal refrigerating machine,95 ton cooling capacity.
December 1928 The nation will never be the same as Carrier air conditionsb oth the Senate & House of Representatives in the U.S. Capitol.
June 1929 Patent issued on a "System for Cooling Mines and other Chambers Requiring Ventilation." The patent was for an air conditioning system installed in Brazil's Morro Vilho Gold Mine.

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