Air quality measurement apparatus, namely, particle counters; Circuit breakers and circuit closers; Climate control systems consisting of digital thermostats, air conditioning, heating, ventilation and drying control devices; Control valves for regulating the flow of gases and liquids; Decorative refrigerator magnets; Electrical outlet plates; Electronic apparatus for use in the treatment of aqueous systems, namely, for analysis of the system conditions for the purpose of applying the appropr...