[ PRINTED MATTER, namely, TEACHING MATERIALS IN THE FIELD OF WATER SUPPLY AND SANITARY INSTALLATIONS, NAMELY, MIXING VALVES, PLUMBING FITTINGS, VALVES AND TRAPS, MANUALLY AND AUTOMATICALLY OPERATED VALVES, MIXER TAPS FOR WASH STANDS, BIDETS, WASHING TABLES, BATHTUBS AND SHOWERS, SHOWER CABINS, SHOWER COMBINATIONS, OVERHEAD SHOWERS, LATERAL SHOWERS AND HAND HELD SHOWERS, NOZZLES FOR SHOWERS AND TAPS, COMPLETE SHOWER UNITS, PRE-ASSEMBLED SHOWER UNITS COMBINING OVERHEAD SHOWERS, LATERAL SHOWERS ...