Industrial safety apparatus for the protection of workers against accidents; Industrial safety apparatus for the protection of workers against injury; Industrial safety instruments for the protection of workmen against accident; Industrial safety instruments for the protection of workmen against injury; Safety headgear specifically adapted for protection against accident and injury; Safety headwear specifically adapted for protection against accident and injury; Apparatus for personal use for protection against accident; Apparatus for personal use for protection against injury; Apparatus for protection against accident; Apparatus for protection against injury; Ear protecting devices (other than ear plugs); Ear protectors (other than ear plugs); Headgear specifically adapted for protection against accident; Headgear specifically adapted for protection against injury; Industrial apparatus for the protection of workers against injury; Protective headgear specifically adapted for the prevention of accident or injury; Ear defenders; Ear plugs for divers; Earphones (other than hearing aids for the deaf); Earphones for radios; Earphones for recording apparatus; Earplugs for divers; Anti-noise apparatus for noise suppression; Anti-noise filters; Noise cancelling apparatus; Noise suppression apparatus