7 POWER-OPERATED MIXERS FOR USE IN THE CHEMICAL, FOOD, PHARMACEUTICAL, BIOLOGICAL, AND POWDER-METALLURGICAL INDUSTRIES; VACUUM FOOD OR CHEMICAL PROCESSING MACHINES FOR USE IN THE CHEMICAL, FOOD, PHARMACEUTICAL, BIOLOGICAL, AND POWDER-METALLURGICAL INDUSTRIES; DOSING MACHINES FOR DISPENSING LIQUID, POWERED, AND GRANULATED MATERIALS; MACHINES FOR PACKING LIQUID, POWDERED AND GRANULATED MATERIALS; SAMPLE REMOVAL AND CLEANING MACHINES FOR CHEMICAL APPARATUS AND CONTAINERS; STATIONERY MACHINES FOR LIFTING, PIVOTING, ROTATING, AND MOVING BARRELS; AND INDUSTRIAL DRYING MACHINES