7
Conveyor machines, belt conveyors, conveyor belts, being parts for heating, steam generating and combustion installations, and for energy generating systems; cinder sifters (machines) and filters, being parts for heating, steam generating and combustion installations, and for energy generating systems
11
heating, steam generating and combustion installations, and parts therefor, included in this class; heat technology equipment and apparatus; heat exchangers; Combustion grates; combustion installations; grate firing installations for solid fuel and waste; installations for the thermal and chemical-thermal conversion of residual materials, secondary fuels and/or biomasses; systems for the production of energy, including systems for conversion of waste to energy (not included in other classes), combustion and gasification systems for biomass and waste; steam generating installations; boiler installations; feeding apparatus for heating boilers; feeders, tubes and flues for heating boilers; boilers, cleaning systems and combustion chambers, being parts for heating, steam generating and combustion installations, and for energy generating systems; burners; devices for supplying solid and liquid fuels to burners; chimney flues, furnace ash boxes, furnace ash transport installations (automatic), being parts for heating, steam generating and combustion installations, and for energy generating systems; filters (parts of household or industrial installations)
37
Construction of heating, steam generating and combustion installations, and of energy generating systems; construction (supervision) of heating, steam generating and combustion installations, and of energy generating systems; installation, repair and maintenance of heating, steam generating and combustion installations, and of energy generating systems
42
Engineering services; planning of heating, steam generating and combustion installations, and of energy generating systems