VORTICAL AIR FILTRATION

Non-electric prime movers not for land vehicles and their structural parts; engines, other than for land vehicles; engines, other than for land vehicles, namely, engines for power generation; engines, other than for land vehicles, namely engines for use in agriculture and horticulture; motors, other than for land vehicles; fuel conversion apparatus for internal combustion engines; filters for cleaning air for engines; air filters for mechanical purposes; filters for motors and engines