NOSK

A dustproof mask for a nose; [ Gas masks; Respirators for filtering air, other than for artificial respiration; Respiratory masks, other than for artificial respiration; Dustproof masks, namely, dust masks; Protective masks, namely, protective dust masks not for medical purposes and protective face masks not for medical purposes; ] Filters for respiratory masks; Nasal air filters for dust masks; Personal nasal air filters for dust masks; Nasal air filters for dust prevention and dust isolation, namely, nasal air filters for use as dust masks