Classification Information
Respirators not for medical purposes and other than for artificial respiration; self-contained self-rescue apparatus, namely, oxygen breathing units; escape self-contained self-rescuers in the nature of oxygen breathing units; closed circuit escape rescuers in the nature of oxygen breathing units rebreather respiratory protection in the nature of oxygen breathing units; person-wearable self-contained self-rescuer in the nature of oxygen breathing units
Electrical and Scientific Apparatus