9
Monitoring and controlling apparatus in the nature of an induction heater monitor for electrical, oil- or gas-operated heating, cooking, drying and ventilation apparatus, namely, room heaters, hot water boilers, flow heaters, storage heaters, closed circuit heaters, combined central heating and service water heaters, heat exchangers, heating boilers, gas burners, oil burners, heat accumulating apparatus, central heating apparatus, wall-mounted gas heating apparatus, wall-mounted gas hot water apparatus, water heaters, bath water heaters, wall boilers, and tankless gas water heaters operated with gas and instantaneous water heaters operated with gas, and parts of the aforesaid goods sold therewith
11
Electrical, oil- or gas-operated heating, cooking, drying and ventilation apparatus, namely, room heaters, hot water boilers, flow heaters, storage water heaters, closed circuit heaters, combined central heating and service water heaters, heat exchangers, heating boilers, gas burners, oil burners, heat accumulators, central heating units, wall-mounted gas heating unit, wall-mounted gas hot water unit, water heaters, bath water heaters, wall boilers, tankless gas water heaters operated with gas and instantaneous water heaters operated with gas and parts of the aforesaid goods sold therewith
37
Mounting, installation, maintenance and repair of electrical, oil- or gas- operated heating, cooking, drying and ventilation apparatus, namely, room heaters, hot water boilers, flow heaters, storage water heaters, closed circuit heaters, combined central heating and service water heaters, heat exchangers, heating boilers, gas burners, oil burners, heat accumulating apparatus, central heating apparatus, wall-mounted gas heating apparatus, wall-mounted gas hot water apparatus, water heaters, bath water heaters, wall boilers, and tankless gas water heaters operated with gas and instantaneous water heaters operated with gas and parts of the aforesaid goods
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