Installation, maintenance and repair of oil separators; Installation of drying apparatus; Repair and maintenance of drying apparatus; Installation of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Maintenance and repair of heating, refrigerating, air-conditioning, drying, ventilating and dust extraction apparatus; Installation, maintenance and repair of air filters

Separators for the cleaning and purification of air; Separators for the cleaning and purification of liquids; Separators for the cleaning and purification of gases; Dryers used for the removal of solid, liquid and vapor contaminants from compressed air and gases; Dryers for the removal of water vapor from compressed air and gases; Electric air driers; Industrial dryers for heating and dehumidifying; Drying apparatus for use in heating, ventilation systems, air conditioning systems and refrige...

Filters [parts of machines or engines]; oil filters, fuel filters, filters for motors and engines, filters for machines; filters for cleaning cooling air, for engines; oil filters for motors and engines; air filters for automobile engines; air-oil separators, steam-oil separators.

Air filters for household use; air filters for industrial installations, air filters for industrial use, air filtering installations, air conditioning apparatus for industrial use, filters for air conditioning, air filters for air conditioning units.

Parts of machines or engines, namely, compressed air and gas filters for compressed air and gas pipes and lines; engine air filters; gas turbine inlet filters for power generation and utilities; oil filters for motors, engines and industrial equipment

Filters as parts of machines or engines, filters for cleaning and cooling air for engines, filtering machines, filter presses

[ BUILDING BOARDS, ESPECIALLY ACOUSTIC BOARDS AND TILES OF METAL FOR CEILINGS AND WALLS ]

devices for audio transmission and reception consisting of transmitters, wireless transmitters, pocket transmitters, [microphones, electroacoustic transducers,] receivers, pocket receivers, wireless receivers, and parts therefor