Air filters for mechanical purposes; Air filters for pneumatic controls being part of machines; Brushes for vacuum cleaners; Dust filters and bags for vacuum cleaners; Electric fan units for vacuum cleaners; Electric vacuum cleaners and their components; Filters and purifiers for machines, namely, filters and purifiers for removing contaminants from gases used in the semiconductor industry; Hoses for vacuum cleaners; Vacuum cleaner attachments for disseminating perfumes and disinfectants; Val...