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...

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; cooling installations for water; air cooling apparatus; filters for water purification, air conditioning, ventilating, air purifying apparatus and machines; electric air driers, compressed air driers for components in the electronics, semiconduct...

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.

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