apparatus, machines and equipment for industry, namely, elevators, conveyer belts; bulk handling systems consisting of rotary obturator, screw conveyors, air slides, silos, bag handling equipment, chutes, mills, mixers, slidegates, vibrators, bulk flow regulator systems consisting of rotary obturator, metering conveyors, diverter valves, double dump valves, samplers, weigh belt feeders, screw feeders, monitors for blockage, temperature, level, speed, motion; pneumatic conveyors and continuous...