IC 037. US 100 103 106. G & S: Installation, maintenance and repair of instruments for measuring, regulating and controlling energy, heat, cold, water, gas, electricity and household charges and for registering and transmitting corresponding data
IC 042. US 100 101. G & S: Design and development of computers and software for household and sanitary use and in the field of heating and energy; technical consulting services in the fields of energy measurement to improve energy efficiency; designing energy management software and hardware; technology consultation in the field of energy usage management practices
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