HVAC

Lewis P Haslett

Who Invented the First Air Filters?

Image: alcetron.com/Lewis P. Haslett Patented by Lewis P Haslett in 1849. Lewis Phectic Haslett was an American inventor and the first person to receive a patent for an early form of the gas mask in 1849. Air purifiers today have been developed from an early gas mask to suit the needs of factory workers to self-standing systems for cleaning the air, as …

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