Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F24
HEATING; RANGES; VENTILATING
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F24H
FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
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F24H15/10
characterised by the purpose of the control
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F24H15/16
Reducing cost using the price of energy, e.g. choosing or switching between different energy sources
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F24H15/164
where the price of the electric supply changes with time
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