Apparatus for filtering drinking water; Filters for drinking water; Filters for water filtering apparatus; Filters made of fiber for water filtration; Household tap-water filters; Membrane filters for water filtering apparatus; Membrane filtration units for water treatment apparatus; Membranes for reverse osmosis units; Reverse osmosis membrane filters for water treatment; Reverse osmosis units; Tap water faucets; Waste water purification apparatus, installations and tanks; Water filtering apparatus; Water filtering devices, namely, water purification installations for waste water and sewage consisting of curtains and textile fabrics; Water filtering units for aquariums; Water filters; Water filtration and purification units and replacement cartridges and filters therefor; Water filtration apparatus; Water purification and filtration apparatus; Water purification apparatus; Water purification installations; Water purification machines; Water purification tanks; Water purification units; Water purification, sedimentation and filtration apparatus for clarification, thickening and filtration of water, waste water and industrial water; Water purifying apparatus; Water purifying apparatus for household purposes; Water softening apparatus and installations; Water softening units; Water treatment apparatus, namely, clarification and thickening machines for use in treatment of liquids in the nature of water, waste water and industrial water; Water treatment equipment, namely, cartridge filtration units; Water treatment equipment, namely, chemical sterilization units; Water treatment equipment, namely, reverse osmosis filtration units; Water treatment equipment, namely, reverse osmosis units; Water treatment equipment, namely, ultraviolet sterilization units; Water treatment equipment, namely, water filtration units; Water treatment equipment, namely, water filtration units and reverse osmosis units