Sludge dewatering units being machines, namely, pumps operating by cavitation and for modifying the granulometry of sludge for obtaining increased dryness of said sludge

Animal-activated animal waterers; Animal activated animal feeders; Animal litter boxes; Aquarium ornaments; Automatic pet feeders; Automatic pet feeding bowls; Automatic pet waterers; Bird baths being bowls for birds to bathe in; Bird cages; Bird feeders; Bird feeding tables; Cages for pets; Cat litter boxes; Covers for bird perches; Litter boxes for pets; Outdoor swings for birds; Pads for cleaning; Pet bowls; Pet feeding bowls, automatic; Place mats of plastic