Apparatus, instruments and installations for heating, cooling, ventilating, water supply and sanitary purposes; nuclear reactors; heat exchangers; ceramic components for use in chemical, electrical, gas, thermal and nuclear apparatus, instruments and installations; parts and fittings for all the aforesaid goods; all included in class 11

Electrical and electronic components; cases, housings, boxes and conduits, all for electrical and/or electronic components or circuits; rectifier housings; conduits for electric and electronic applications or for use in or with evaporation plants, particle accelerators and/or ionisation chambers; conduits and bushings for condensors and transformers; substrates; connector and terminal mouldings; metallized insulator rings for waveguide tubes; insulator discs and sheets for printed circuits and potentiometers; ceramic materials for use as components of measuring, detecting and sensing apparatus and instruments; gas sensors; oxygen pressure and oxygen partial pressure measuring devices; electric welding apparatus, control apparatus therefor and plug and socket connections therefor; fire-proof covers and fire traps, all of ceramics, stoneware or plastics; laboratory apparatus, instruments and furniture; bench covers, bench tops, sinks, all for use in laboratories and whether or not corrosion resistant; parts and fittings for all the aforesaid goods; all included in Class 9

Materials and articles for use in building and civil engineering construction; pipes, tubes and gutters and connectors, couplings and joints therefor; valves; prefabricated buildings; structures; cabinets and cubicles; electrofusion pipe fittings; materials for use in welding or for use in electrofusion; parts and fittings for all the aforesaid goods; all included in Class 6

Installation, maintenance, repair and reconditioning of pumps, valves, and armatures and of parts and fittings therefor; contract production of castings