Bulk materials handling systems composed of machines for discharging material from silos, hoppers and bunkers; ; conveyors, screw conveyors and belts therefor; ; valve and solid material pumps being parts of machines; piston-type pumps

BULK MATERIALS HANDLING SYSTEMS COMPOSED OF MACHINES FOR DISCHARGING MATERIAL FROM SILOS, HOPPERS AND BUNKERS; CONVEYORS, SCREW CONVEYORS AND BELTS THEREFOR; VALVES AND SOLID MATERIAL PUMPS BEING PARTS OF MACHINES; PISTON-TYPE PUMPS

bulk materials handling systems composed of machines for discharging material from silos, hoppers and bunkers; conveyors, screw conveyors and belts therefor; valves and solid material pumps being parts of machines; piston-type pumps