7
Machines, mechanical equipment, machine tools and parts therefor, for the storage, treatment, conveyance and discharge of liquids, waste of all kinds, screenings, clarified sludge and filter cakes, in particuar clarifying containers and septic tanks, namely installations consiting of machines and machine parts for the treatment of liquids or sludge, in particular by means of circulation, stirring and gas injection; pipes, sliding valves, contactors, back-pressure valves, strainers, grit chambers, namely apparatus and installations consisting of machines and machine parts for the treament of liquids, in particular by means of circulation, stirring, gas injection and particulate discharging, grit extractor-classifiers, grit washers, sifters, rakes, rake cleaners, fixed, travelling or rotating basin bridges and circulation bridges, namely apparatus and installations consisting of machines and machine parts for the treatment of liquids and sludge, in particular by means of circulation, stirring, gas injection, aeration, sludge collection and particulate discharging, surface aerators, aerating rotors, aerating gyros, underwater aerators, stirrers, raking machines, circulating screws, floating matter collectors, sludge collectors, grit chamber collectors, trickling filters, sludge compactors, sludge conveyors, drag conveyors, bucket wheels, sewage pumps, sludge pumps, screen shredders, filters, filter presses, filter press plates and frames, digestion tank devices consisting of septic tanks, heating apparatus, mechanical circulation, stirring, gas injection, spraying and/or scum-swirling apparatus for treating digested sludge; filter cake bunkers and conveyors; all the aforesaid goods wholly or partly of metal, concrete, ceramic and/or plastic, clarifying installations comprising the aforesaid goods, mechanical apparatus for the combustion and incineration of clarified sludge and screenings; all the aforesaid goods included in class 7; basin covers, gullies, weirs, grates, grilles, inlets, circulation agitators and rotary sprayers being machine parts for machines for the storage, treatment, conveyance and discharge of liquids, waste of all kinds, screenings, clarified sludge and filter cakes, included in class 7
9
Weighing, measuring, signalling and checking (supervision) apparatus and instruments, apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, in particular computer hardware and software for the control, process management and operation of installations for the storage, treatment, conveyance and discharge of liquids, waste of all kinds, screenings, clarified sludge and filter cakes
37
Building construction and installation services, in particular in relation to installations for the storage, treatment, conveyance and discharge of liquids, waste of all kinds, screenings, clarified sludge and filter cakes
42
Scientific and technological services and research and and design relating thereto, industrial analysis and research, in particular planning, preparation and conducting of internal and external building projects, in particular hydraulic structural and civil engineering projects, and installations for the storage, treatment, conveyance and discharge of liquids, waste of all kinds, screenings, clarified sludge and filter cakes, research, measurement and analysis in the field of environmental pollution, testing and expertise in the aforesaid field, monitoring the quality of waters, air, gases and liquids