Gas burners; diesel oil burners; fuel oil burners; gas and diesel oil multi-fuel burners; gas and fuel oil multi-fuel burners; industrial burners; gas and oil burners for household and industrial purposes; burners for heating for use in both gas and oil; burners; acetylene burners; alcohol burners; burners for lamps; germicidal burners; incandescent burners; laboratory burners; oil burners; oxhydrogen burners; petrol burners; brackets for gas burners; gas burners for industrial purposes; portable gas burners; dampers [heating]; heating apparatus; heating elements; heating furnaces; heating installations; heat regenerators; thermostatic valves [parts of heating installations]; heating apparatus for solid, liquid or gaseous fuels; heat exchangers, not parts of machines; electric space heating apparatus for household purposes; dosing valves [parts of heating or gas installations]; space heating apparatus for industrial use; boiler pipes [tubes] for heating installations; solar thermal collectors [heating]; heating furnaces for industrial use; heating filaments, electric; heating apparatus, electric; heaters for heating irons; heated display cabinets; flues for heating boilers; feeding apparatus for heating boilers; central heating boilers; gas boilers; heating boilers; industrial boilers; boilers, other than parts of machines; steam boilers, other than parts of machines; heat accumulators; solid fuel burning stoves; gas injectors for feeding gas to gas burners for domestic and industrial use and parts thereof; boilers for hot water production for domestic and industrial use; heat pumps; hot water heating installations; air reheaters; pipe line cocks [spigots]; faucets for pipes; regulating and safety accessories for gas pipes; gas scrubbers [parts of gas installations]; gas scrubbing apparatus; steam generating installations; expansion tanks for central heating installations; radiators [heating]; central heating radiators; electric radiators; heaters for baths; stoves; gas stoves for household purposes; stoves [heating apparatus]; electric cooking stoves for household purposes; portable stoves; safety accessories for water or gas apparatus and pipes; gas-fired water heaters for household use; scrubbers [parts of gas installations]; installations for the purification of gas; gas water heaters; gas igniters for ovens; friction lighters for igniting gas; gas ovens; cooking installations; apparatus for lighting; ventilation installations; gas refrigerators; refrigerating apparatus; water supply installations; drying installations; pipes [parts of sanitary installations]; sanitary installations