Sludge filters, namely, filter for sludge dewatering machines; Sand filters for machines in industrial or civil waste water treatment applications; Filtering machines for waste water processing; Screening machines for waste water processing; Filters and filtering screens as parts of machines as a part of waste water treatment; Effluent, slurry and waste water filtering machine parts, namely, sifters and rakes screens; Sludge treatment machines; dewatering screens as a parts of slurry or waste water filtering machines; Sifting installations namely, solids liquid sifting installations in the nature of slurry or waste water separators for use in extracting liquid from slurry or waste water materials; Sifters as machines and as machine parts for use in extracting liquid from slurry materials or waste water; solid-liquid separators for removing solids from manure slurry or waste material; Screw separators for use in separating solids from liquid; Machines for separating solids from liquids; Machines for separating solids from sludge; Waste material removal machines; Machines tools for removing waste material; Electric washing machines for industrial purposes; Pressing machines for use in separating the liquid phase from the solid phase of substances such as sludge, sewage, manure, waste water and vegetables; Screw sludge, sewage, manure, waste water and vegetables compactors; Machines for dehydrating sludge; Waste compacting machines; Screw sludge, sewage, manure, waste water and vegetables liquids-solids separating and compacting machines and devices for use in separating solids from liquid; Scrapers as part of machines for moving solids from waste water; sludge scrapers machines for use in skimming solids from waste water; Machines for thickening waste water; Machines for thickening sludge; Screw thickener machine for use in thickening sludge or waste water; wastewater treatment thickener, namely, machine for thickening solid matter in waste water; Machines for crushing waste; Shredders machines for industrial use; Waste disposers; Mixing machines; sludge, sewage, manure, waste water Mixers; Screw mixers, namely, mixing machines for use in industrial and commercial applications; Polyelectrolyte milk preparation systems comprising agitator for circulating liquid media and dispensing values being machines parts for use in milk preparation; Agitators for anaerobic digesters; circulating Pumps; Sludge pumps; Rotary lobe pump; Rotary pumps; Filtering, separating and sorting Machines for processing sludge; Filtering, separating and sorting Machines for processing waste material

Machines and installations for the mechanical purification of waste water; waste water purification Filter for industrial or civil installations; Water filtering apparatus; Filters being parts for filtering installation; Biological contactor for treatment of sewage and drainage water; Biological reactors for clarifying water; Sewage treatment plants; purification installations for sewage; water purifying apparatus and machine; Apparatus, machines and installations or mechanical, chemical and/or biological water purification and water treatment; Installations for biological waste water treatment; Water purification, sedimentation and filtration apparatus for clarification, thickening and filtration of water, waste water and industrial water; Installations for biological waste treatment; Installations for sewage system; waste water treatment Machine for aerating and circulating waste water; Machines for drying sludge; Machines for drying waste