Class 016
Paper Goods and Printed Material
Filtering materials of paper; filtering materials and membranes of paper; filters of paper
Filtering materials [textiles]; filters of textile material; textile filtering materials and membranes
Filtration membranes for medical use; filters for respiratory masks for medical use; surgical masks; hygiene masks for medical use; face masks for medical and surgical use; respiratory masks for medical use; sanitary masks for non-medical use