Swimming pool skimmer flow diverting weir for increasing the amount of debris drawn into the skimmer; Sewage purification installations; Swimming pool water cleaning and filtering units; Filters for water filtering apparatus; Water filtering devices, namely, water purification installations for waste water and sewage consisting of curtains and textile fabrics; Water purification and filtration apparatus; Filters, heaters and pumps sold in combination for use in swimming pools; Pool skimmer di...