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7
Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agricultural implements other than hand-operated; incubators for eggs.
machine parts, namely silencers not for land vehicles; mufflers for internal combustion engines; silencers for gas turbine engines; spark arrestors for engines; filters being parts of machines; filters for cleaning air for engines; centrifugal pre-cleaners and air cleaners for engines; dust unloader valves for centrifugal air cleaners; coolant clarifying units for grinding machines; centrifugal separators for removing particles from liquids in continuous flow; porous media air filters and pre-screeners for engines; oil bath air cleaners for internal combustion engines; air-oil separators having a coalescing element followed by an inertial separator; air intake caps and hoods for air filters for engines; aircraft gyro filters; dust collectors and dust separators of an industrial nature for use in manufacturing processes
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9
Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
[ gauges for monitoring and indicating air flow restriction ]
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11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
air filters (not for scientific purposes and not being parts of engines, of motors or of machines); oil filters (not being parts of lubrication systems of internal combustion engines); ventilation panel filters for industrial ventilation; automatic self-cleaning dust filters for industrial applications; ventilating and filtering installations to supply filtered clean air to enclosed rooms; air filtering installations for buildings and factories primarily comprising self-cleaning filter cartridge collectors; and ventilation panel filters for vehicles operator cabs, for air conditioners and for electronic equipment
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12
Vehicles; apparatus for locomotion by land, air or water.
[ mufflers, silencers and spark arrestors for land vehicles; and air filters for fixed wing airplanes and helicopters ]