IC 011. US 013 021 023 031 034. G & S: Heat recovery, heating, steam generating, refrigerating, drying and ventilating apparatus, namely, heat exchangers, boilers, furnaces, air conditioning units, humidifiers and dehumidifiers; apparatus and instruments for conducting, processing, heating, refrigerating, filtering, humidifying and dehumidifying, regulating and controlling of air, for the air conditioning of rooms

IC 016. US 002 005 022 023 029 037 038 050. G & S: Printed technical manuals, technical bulletins and technical advisories relating to heating, ventilating and air conditioning installations

IC 037. US 100 103 106. G & S: Air conditioning apparatus installation, maintenance and repair

IC 042. US 100 101. G & S: Technical consultancy in the field of the design of heating, ventilating and air conditioning systems; technical project management in the design of heating, ventilating and air conditioning systems, namely, technical project planning engineering services and design engineering of heating, ventilating and air conditioning installations, and providing specifications and technical documentation in relation to the control and regulating of heating, ventilating and air conditioning installations; technical consultation services in the field of energy measurement to improve energy efficiency; remote monitoring of heating, ventilating and air conditioning installations; design and development of computer hardware and software