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US Patent: 808,897
Apparatus for treating air
Willis H. Carrier - Buffalo, NY

USPTO Classifications:
239/468, 261/DIG.3, 261/DIG.34, 261/DIG.39, 261/DIG.43, 55/440, 96/356

Tool Categories:

Buffalo Forge Co. - Buffalo, NY

Buffalo Forge Co. - Buffalo, NY

C. B. Hornbeck
Charles W. Parker

Patent Dates:
Applied: Sep. 16, 1904
Granted: Jan. 02, 1906

Patent Pictures:
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"Vintage Machinery" entry for Buffalo Forge Co.
This patent covers what is considered to be the first modern air conditioner, that is, a device that controls both temperature and humidity while circulating and cleaning the air.

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