7
Sludge filters, filter presses, sand filters, all the aforesaid goods being parts of machines; filter machines, sifting machines, sludge collectors (machines), separators (machines), sifting installations, sifters being machines or parts of machines, sifting machines, machines for removing waste materials, machines for separating solids from liquids, centrifuges (machines); machines for driving water purification installation components, machines for treating waste (included in class 7), machines for crushing waste, separators (machines), separators for removing solids from liquids (machines), raking installations (machines), separators (machines) for sand, machines for separating solids from sludge, machines for dehydrating solids, machines for dehydrating sludge, machines for thickening sludge, flotation machines, separators (machines) for greases, separators (machines) for oils, cloth filters being parts of machines, mechanical apparatus and machines for treating urine (included in class 7); mechanical apparatus and machines for biogas generation from waste and/or wastewater; mechanical apparatus and machines for the anaerobic treatment of waste and/or wastewater; machines for treating rainwater (included in class 7), machines for straining rainwater
9
Checking (supervision) apparatus for operating clarifying installations; electric switchgear and control devices for wastewater purification installations; machines for dosing chemicals, machines for dosing flocculating/auxiliary flocculating agents
11
Wastewater clarification installations, water supply installations, water purification installations, water purification devices and machines, water filters, water filtering apparatus, drying apparatus, drying equipment, water supply apparatus, sanitary apparatus and installations, water filtering installations, namely microfiltration installation, membrane filter installations and ultrafiltration installations; reverse-osmosis vessels; fixed bed reactors for biological wastewater treatment, installations for biological wastewater treatment, drinking water treatment installations and machines, equipment parts for drinking water storage containers (included in class 11), sedimentation beds, wastewater purification machines, machines for drying sludge, machines for drying waste, machines for aerating liquids, machines for purifying rainwater