76299320
Aug 14, 2001
Oct 21, 2003
air filters for providing breathable air; gas filters; particulate filters; positive pressure air filtration systems comprised of air filters, blowers, control modules and associated hoses, fittings, brackets and mounts; self-powered, powered and non-powered space heaters and tent heaters; positive pressure heating systems comprised of fuel containers, fuel can stands, fuel can caps, heaters, blowers and associated hoses, fittings, brackets and mounts; hot water heaters; positive pressure protective entrances comprised of walls, power units, blowers, control modules an associated hoses, fittings, brackets and mounts
Environmental Control Apparatus