L

Machines for sewage disposal plants, namely, machines which convey and compact grit and sand in wastewater and sewage; machines for sewage disposal plants which remove mechanical and biological materials and sludge in wastewater and sewage by means of separation and conveyance; mechanical graters and screens for cleaning, namely, machine graters also incorporating screens which screen and cleanse solid materials in wastewater and sewage; feeding and transporting machines, namely, waste material conveying and compacting machines; mechanical separators and fitted parts and fittings for separators, namely, transportation equipment in the nature of conveyers incorporating screens for separating waste material; rotor spinning machines; screw conveyors; roller scrapers being machine tools, namely, scrapers which remove sludge from rectangular and circular tanks used in sewage treatment plants as well as industrial water processing applications; scraper apparatus, namely, machines for removing sludge from rectangular and circular tanks used in sewage treatment plants as well as industrial water processing applications; industrial centrifugal decanting machines

Water purifying installations; water purifying apparatus; industrial water purifying units and apparatus; water filtering apparatus; water conditioning apparatus, namely machines for fine filtering and polishing of water; water treatment installations, namely machines for water treatment processes for clarification and thickening, dewatering, and filtration of water, waste water and industrial water, and separators for the cleaning and purification of water; water purification units; settler apparatus for water, namely water filtering machines to screen fine particles that have settled in water tanks; apparatus for water filtering; filters for water purifiers; filters for use with apparatus for water supply; filter boxes for water purification; coarse strainers for water screening, namely screens and strainers to separate solids from incoming water to a water treatment plant; wastewater purification units; water conditioning unit; heat exchangers, not parts of machines; apparatus for the production and purification of biogas, namely, vessels, strippers and absorption columns; drum screening and screw screening machines for water purification; waste water treatment tanks

Installation, repair and maintenance of water purifying apparatus; installation, repair and maintenance of apparatus and machines for use in preparation of biogas; installation, repair and maintenance of waste management machines