(ABANDONED) IC 009. US 021 023 026 036 038. G & S: Electric or electronic control or regulating apparatus and instruments, in particular controls and regulators for heat pumps; power electronic devices, apparatuses and instruments for switching, converting, regulating and controlling electricity
(ABANDONED) IC 011. US 013 021 023 031 034. G & S: Heating, vapor generating, cooling, drying and ventilating devices, heat pumps, evaporators for heat pumps, liquifiers for heat pumps, in particular installations for use of energy, storage of energy and conversion of energy included in this class
(ABANDONED) IC 037. US 100 103 106. G & S: Maintenance of technical installations for use of energy, in particular installations for the purpose of heating, vapor generation, cooling, drying, ventilation, storage of energy and conversion of energy
(ABANDONED) IC 042. US 100 101. G & S: Development of technical installations for use of energy, in particular installations for the purpose of heating, vapor generation, cooling, drying, ventilation, storage of energy and conversion of energy
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