The very earliest famous gas-mask manufacturer was that the German company Siebe, Gorman and Co which started being a manufacturer of diving suits and breathing helmets at 18-19. Patents for air-purifying inhaler apparatus were issued by the US Patent office since 1849.
When the unit failed to stop the inhalation of some noxious gasses these certainly were exceptionally effective to use in coal mines and also for firefighters. The easy manufacturing process was usually conducted by a little set of men operating in somebody’s backyard.
Even the H.S. Cover Company, called after its creator, produced cup-type masks which covered the nose and mouth, however, abandoned the eyes vulnerable. Founded in 1894, this provider manufactured cup-type masks before arrival of World War One as it changed to fabricating gas masks to the US Army.
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The Drager breathing device, invented in 1903 and fabricated by the Drager Organization of Germany, became so well known from the mine rescue industry that the definition of “dragerman” turned into a synonym for the underground mine rescue worker.
After the anthrax attacks happened shortly afterwards, small gas mask manufacturers turned into big organizations immediately. Significant corporations such as 3M, Moldex and Goodrich all jumped onboard and began manufacturing some kind of petrol mask designed more to exacerbate the anxieties of a more nervous people than whatever else.
Because there haven’t been any large scale biological or chemical strikes on major public areas as the end of WW1, there’s never been an incident where the utilization of gas masks has now led in saving the lives of millions of masses of individuals.