Description: Class 7: Air classifiers in the nature of downdraft separators and cyclones, and pneumatic conveyors, conveying system equipment, namely, feeder mechanisms, valves being parts of machines, vacuum pumps, air locks, air lock feeders for vacuum conveying systems, machines for conveying and blending powdered, pelletized and granular materials, namely, rotary airlocks, airlock feeders, line diverters, elutriators and cyclones
Class 9: Electric process controllers for air pollution control equipment and pneumatic conveyors
Class 11: Dust filtering units and fluidizer beds for use in grain storage bins, air filters for domestic use and for industrial installations, dust filters for industrial use, air pollution control equipment for commercial and industrial use, namely, high efficiency particulate air filter units, electric centrifugal fans, cartridge air filter units, cyclone separators/collectors, mechanical diverter valves used in the aforesaid equipment, air flow units, fabric air filter baghouses, positive displacement blowers, replacement cartridge air filter elements and high efficiency particulate air filter elements, replacement air filter bags and cages, and mechanical scale hoppers; industrial air filter machine parts, namely, rotary airlocks and industrial dust collectors
