Air-conditioning apparatus; Apparatus for the exchange of substances and heat for use in the production of steam, for use in cooking and for use in refrigeration; Bathroom heaters; Baths, bathtubs, whirlpool baths and bath installations; Bathtubs; Bed warmers; Bidets; Cooking stoves; Drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems; Electric coffee makers; Electric heaters for commercial use; Electrically heated towel rails; Faucet sprayers; Filters for air conditioning; Filters for drinking water; Hair dryers; Hot water heating installations; Instantaneous water heaters; Lamps; Lighting fixtures; Mixer taps for water pipes; Plumbing fittings, namely, drains; Plumbing fittings, namely, sink strainers; Plumbing fixtures, namely, shower sprayers; Pressure regulators for sanitary installations; Regulating accessories for water supply, namely, metered valves; Shower cubicles; Shower heads; Shower panels; Shower screens; Showers; Space heating apparatus; Steam generators; Tap water faucets; Toilet cisterns; Toilet seats; Toilets; Wash-hands basins being parts of sanitary installations; Water heaters; Water purification, sedimentation and filtration apparatus for clarification, thickening and filtration of water, waste water and industrial water; Heating systems composed primarily of tubes, pipes and pre-assembled manifolds through which cold or low temperature water circulates