The invention by Willis H Carrier relates to apparatus for treating air prior to its use in ventilating and heating building structures or for other commercial purposes such as drying, refrigerating, and the like, and more specifically to air-purifying apparatus. The air conditioner is still regarded as one of the most significant contemporary inventions, offering temperature control in both homes and businesses for more than a century.
US Patent Number: 808,897
Invention: Apparatus for Treating Air
Inventor: W. H. Carrier
Year: 1906
Material: Ink on Japanese museum-quality archival paper. Thickness of paper: 10.3 mil (0.26 mm). Weight of paper: 5.57 oz/yd² (189 g/m²)
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