Lewis Phectic Haslett was an American inventor and the first person to receive a patent (US 6529 , "Inhaler or Lung Protector") for an early form of the gas mask in 1849.[1]
References
^Christianson, Scott (2010). Fatal Airs: The Deadly History and Apocalyptic Future of Lethal Gases that Threaten Our World. ABC-CLIO. ISBN9780313385520.