Floor polishers; Sanding machines for woodworking; Concrete finishing machines; Floor sanders; Electric sanders; Kits comprised of sandpaper sheets configured to fit power-operated sanders; Dust bags for vacuum cleaners; Dust separators; Power-operated floor burnishers; Vacuum cleaners; Power-operated blowers; Vibratory grinding machines; Mixing machines; Electric concrete vibrators; Grinding and polishing machines; Hand-held vacuum cleaners; Puddling machines; Wood grinding machines; Electri...