4
Mineral fuels; peat [fuel]; peat briquettes (fuel); solidified gas (fuel); fuels; combustible briquettes; coal briquettes; Wood briquettes; solid fuels from biomass, in particular animal droppings; solid fuels, in particular in briquette, ball, egg or pellet form
11
Heating boilers; boilers for steam machines; feeding apparatus for heating boilers; fuel economisers; heating apparatus for solid, liquid or gaseous fuels; air valves for steam heating installations; overflow tanks for central heating systems; apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; flues for heating boilers; heating apparatus; heating installations; heaters for vehicles; refrigerating installations for liquids and gases; cooling installations and machines; heat exchangers; regulating accessories for water or gas apparatus and pipes; safety accessories for water or gas apparatus and pipes; dampers (heating); boiler pipes [tubes] for heating installations; coils (parts of distilling, heating or cooling installations); solar collectors [heating]; thermostatic valves (parts of heating installations); water heating installations; central heating radiators; dampers (heating); incinerators; apparatus for drying; drying and heating boiler installations for the pelletising of, and storage of energy from, animal droppings, in particular horse manure, and biomass; drying and heating boiler installations for biomass
40
Generation of energy; incineration of rubbish, waste and biomass, in particular animal droppings; production of solid fuels from biomass, in particular animal droppings