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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.
mufflers for internal combustion engines; silencers for gas turbine engines; spark arrestors for internal combustion engines; centrifugal pre-cleaners and air cleaners for internal combustion engines and gas turbine engines; dust unloader valves for centrifugal air cleaners; centrifugal type coolant clarifying units for grinding machines; and centrifugal separators for removing particles from liquids in continuous flow
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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.
air flow restriction indicator gauges
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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.
porous media air filters and prescreeners for gas turbine engines and internal combustion 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 internal combustion engines; ventilation panel filters for vehicle operator cabs, air conditioners, electronic equipment and industrial ventilation; aircraft gyro filters; and automatic self-cleaning dust filters for industrial application
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11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
porous media air filters and prescreeners for gas turbine engines and internal combustion 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 internal combustion engines; ventilation panel filters for vehicle operator cabs, air conditioners, electronic equipment and industrial ventilation; aircraft gyro filters; and automatic self-cleaning dust filters for industrial application