Air-conditioning, air cooling and ventilation apparatus and instruments; Air conditioning apparatus; Air conditioning installations; Air conditioning units; Boilers for heating installations; Cooling units for industrial purposes; Cooling domes; Cooling evaporators; Drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems; Feed water heaters; Heat pipes to cool heat producing components; Heat accumulators; Heat diffusion collars and discs for use in furnaces; Heat exchangers not being parts of machines; Heat exchangers, not parts of machines; Heat generators; Heat pumps; Heat sinks for use in heating, cooling and ventilating apparatus; Heating systems composed primarily of tubes, pipes and manifolds through which warm or high temperature water circulates; Heating systems composed primarily of tubes, pipes and pre-assembled manifolds through which cold or low temperature water circulates; Heating systems for residential and commercial buildings comprised of biomass burners, boilers, valves, pipes, manifolds, solar panels, control panels, switches and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, solar panels, control panel, switches and electrical wire, all sold as a unit; Heating units for industrial purposes; Heating and cooling panels used for indoor heating and cooling purposes; Heating apparatus for solid, liquid or gaseous fuels; Heating boilers; Heating elements; Heating furnaces; Heating installations; Heating panels used for indoor heating purposes; Heating systems composed primarily of tubes, pipes and manifolds through which warm or high temperature water circulates; Heating systems for residential and commercial buildings comprised of biomass burners, boilers, valves, pipes, manifolds, solar panels, control panels, switches and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, solar panels, control panel, switches and electrical wire, all sold as a unit; Heating units for industrial purposes; Interior environment control system for commercial buildings, namely, heaters, ventilators and humidifiers all sold as a unit; Power-operated vaporizers for household purposes; Power-operated vaporizers for industrial or commercial purposes; Radiators; Radiators, electric; Solar collectors for heating; Steam accumulators; Steam generating installations; Steam generators; Steam heating apparatus; Ventilating fans for commercial and industrial use; Ventilating louvers; Ventilation hoods; Waste oil heaters; Water heaters; Acetylene burners; Air valves for steam heating installations; Air valves for steam heating installations; Air-conditioning, air cooling and ventilation apparatus and instruments; Boilers for heating installations; Central heating radiators; Central heating radiators; Coils as parts of distilling, heating or cooling installations; Coils as parts of distilling, heating or cooling installations; Commercial and industrial cookware, namely, gas and electric boilers, gas and electric broilers, gas and electric roasters, gas and electric braising pans; Components for air conditioning and cooling systems, namely, evaporative air coolers; Components for air conditioning and cooling systems, namely, evaporative air coolers; Economisers, namely, devices for warming feed water in heating boilers; Economisers, namely, devices for warming feed water in heating boilers; Economisers, namely, devices for warming feed water in heating boilers; Electric boilers; Electric floor heating systems, namely, cables, electric mats and sensors for floor heating systems sold as a unit; Electric heaters for commercial use; Electric heating fans; Electric radiant heaters; Electric radiators for heating buildings; Electric fans with evaporative cooling devices; Electric floor heating systems, namely, cables, electric mats and sensors for floor heating systems sold as a unit; Electric radiators for heating buildings; Electric space cooling apparatus; Electrical boilers; Evaporative air cooling units for domestic use; Feed water heaters; Floor heating apparatus; Furnace boilers; Gas burners; Gas water heaters; Gas fired water heaters; Gas fired water heaters; Gas water heaters; Heat sinks for use in heating, cooling and ventilating apparatus; Heat sinks for use in heating, cooling and ventilating apparatus; Heating boilers; Heating and cooling panels used for indoor heating and cooling purposes; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, solar panels, control panel, switches and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of biomass burners, boilers, valves, pipes, manifolds, solar panels, control panels, switches and electrical wire, all sold as a unit; Heating systems for residential and commercial buildings comprised of biomass burners, boilers, valves, pipes, manifolds, solar panels, control panels, switches and electrical wire, all sold as a unit; Hot water heaters; Hot water heaters; Hot water tanks; Hot-air space heating apparatus; Hot-water space heating apparatus; Ignition systems comprised of a gas supply tube with a nozzle and an electrical igniter to create a flame at the nozzle for industrial applications, namely, for igniting waste gases being discharged from industrial stacks and for igniting gas-fired boilers; Indoor radiant heating systems; Indoor radiant heating systems; Industrial boilers; Industrial cooling apparatus, namely, compax coolers; Industrial dryers for heating and dehumidifying; Oil and gas burners for domestic, commercial and industrial uses; Parts for heating and air conditioning systems, namely, heater cores and gas coolers for vehicles; Parts for heating and air conditioning systems, namely, heater cores and gas coolers for vehicles; Parts for heating and air conditioning systems, namely, heater cores and gas coolers for vehicles; Peltier cooling and heating apparatus; Peltier cooling and heating apparatus; Pipes for heating boilers; Pipes for heating boilers; Solar water heaters; Solar energy based cooling apparatus; Solar thermal air systems for heating purposes; Solar water heaters; Solar-powered cooling units; Steam heating apparatus; Steam radiators for heating buildings; Steam radiators for heating buildings; Thermostatic valves; Thermostatic valves; Thermostatic valves as parts of heating installations