11 Air purifiers; Air purifying units for commercial, civilian, medical, government and military use and component parts therefor; Air cleaning units; Air cleaning units containing an air filter and ultraviolet lights; Air filters for domestic use; Air filters for industrial installations; Air purification units; Air purifying apparatus and machines; Air purifying units for commercial use; Air purifiers for use in surgery, endoscopy, and medical applications; air purification system for personal airspace, indoors and outdoors; personal protective equipment for protection against environmental pollutants, allergens, viruses, microbes, and dust particles; Air purification system for enclosed/indoor air spaces, being office spaces, hospitals, restaurants, fitness facilities, museums