9 Electric apparatus and instruments (included in class 9), except audio apparatus and instruments, including loudspeakers.
11 Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; Gas scrubbers [parts of gas installations]; Apparatus for the purification of gases; Regulating and safety accessories for gas apparatus; Regulating and safety accessories for gas pipes; Regulating and safety accessories for water apparatus; Regulating accessories for water or gas apparatus and pipes; Safety devices for water or gas installations and pipes; Feeding apparatus for heating boilers.
21 Utensils (so far as included in class 21) and containers for household or kitchen use (not of precious metal or coated therewith).
37 Installation services, maintenance and servicing of energy installations.
39 Making available, delivery and supply of or with energy of all types and water.
40 Treatment of materials and recycling (disposal of energy waste, recycling).
