Anti-pollution masks for respiratory protection; [ filters for respiratory masks; filters for use in respiratory masks; filters for use with respiratory apparatus not for medical purposes; filters for use with respiratory face masks; ] powered respirators other than for artificial respiration; respirators other than for artificial respiration; respirators for filtering air not for medical purposes; respirators for protective purposes; respiratory apparatus, other than for medical use, namely,...

Anti-pollution masks for respiratory protection; filters for respiratory masks; filters for use in respiratory masks; filters for use with respiratory apparatus; filters for use with respiratory face masks; powered respirators (other than for artificial respiration); respirators (other than for artificial respiration); respirators for filtering air; respirators for protective purposes; respiratory apparatus, other than for medical use; respiratory gas blending apparatus, other than for medica...