Respirators for filtering air for protective and safety equipment; Rebreathers for diving; Air analysis apparatus; Compressed air bailout units for diving; Air tanks for use in scuba diving; Breathing masks, namely, respiratory masks other than for artificial respiration; Underwater breathing apparatus; Breathing apparatus, except for artificial respiration, namely for underwater swimming and diving; Air filters, namely, for protective and safety equipment
Electrical and Scientific ApparatusAir filters, namely, air filters for domestic use; Filters for cleaning air, namely, air cleaning filters for air conditioning, and industrial air filtering installations; Filters for air purifiers
Environmental Control Apparatus