23 MACHINES AND EQUIPMENT FOR PULVERIZING, SHREDDING, CRUSHING, HOMOGENIZING, KNEADING, MIXING, MILLING, AND CENTRIFUGING GASEOUS, DRY, DOUGHY, LIQUID, VISCOUS, OR SOLID MATERIALS IN POWDER, FLAKEY, OR GRANULAR FORM (IN THE FORM OF EITHER SMALL PIECES OR LARGE PIECES), OR MIXTURES OF INDIVIDUAL ITEMS AMONG THESE MATERIALS WITH EACH OTHER, FOR THE WASTE-WATER INDUSTRY, THE FOOD INDUSTRY, ESPECIALLY THE CHOCOLATE, PASTE, AND NOODLE MANUFACTURING INDUSTRY AND THE SUGAR INDUSTRY; FOR THE CHEMICAL INDUSTRY, LIKEWISE THE MILLING AND PAPER INDUSTRY; PUMP-TYPE CONVEYORS FOR THE AFOREMENTIONED GOODS AND BRANCHES OF INDUSTRY