Electronic current rectifiers, controllers, solenoids and microelectronic circuitry therefor; electronic switch circuitry and switches for electric motors; electrical apparatus for collecting, exhausting, controlling or filtering dust, powdery materials or waste products, and for air cleaning and air purifying; electrostatic precipitators; electric vacuum cleaners for industrial use; electrical control apparatus and instruments; anti-vibration mountings for electrical apparatus and instruments, scientific, nautical, surveying, photographic and cinematographic apparatus, and for commutators; electrical apparatus and instruments, wireless, scientific, nautical, surveying, photographic and cinematographic, optical, weighing and measuring apparatus and instruments; fluid flow control apparatus; apparatus for monitoring, controlling and regulating valves and parts of valves; pneumatic control apparatus; valve monitoring and control apparatus; electric positioners; electric actuators; electric batteries and electric accumulators; fire alarms and illuminated signs all for operation by electric batteries; sealed recombination electric storage batteries, all for use in standby or emergency power applications; parts and fittings for the aforesaid goods; scientific and electrical apparatus and instruments; electric cells and electric batteries, cases adapted for electric cells and electric batteries, separators being parts of electric batteries, electric cells and battery chargers; apparatus for supplying power, for controlling the supply of electricity and for speed regulating; combined electric batteries and electric battery charging apparatus being automatically operated apparatus for supplying power; photo-electric apparatus, electric switches for incorporation into mats; electric transformers, voltage regulators, electric current meters, voltmeters, alarms and indicators, all for use in indicating variations in the condition of electric circuits from pre-set conditions; apparatus for testing of lead acid batteries and lead acid electric cells, rectifying apparatus, inverters, converters and frequency changers, all being electric; power supply systems adapted for the telecommunication industry; continuous DC power systems incorporating rectifiers, storage batteries, supervisory monitor units and standby generators; DC rack power systems incorporating switch mode rectifier technology; electric storage batteries, industrial battery chargers, hydrometers, hydrometer floats, thermometers and voltmeters; electrical and electronic management, control, supervision or display apparatus for use in railway systems; automatically operated safety barriers; electrically operated door closing apparatus; electronic and pneumatic controls for vacuum-dewatering papermaking machinery; parts and fittings for all the aforesaid goods; controllers and computers for recording industrial process variables, namely flow of materials, temperature, pressure and liquid level, electrical forces, and gas analysis, and for factory automation; indicating and recording meters and transmitters for management, monitoring and measuring industrial process variables and for communicating with controllers and computer networks; automatic and manual controls which monitor, adjust, and regulate a building's heating, air conditioning, and ventilation systems; electronic time controllers for minimization of energy consumption and for maximization of efficiency of heat pumps; automatic controls of security access, fire management and lighting of buildings; thermostats, thermometers, thermocouplers, thermographs, thermostatic water mixers, thermostatic systems for automatic temperature control, thermostatic tank regulators and thermostatic safety control devices, and ignition systems for fuel burners; temperature responsive mechanisms for controlling automatic refrigerators, and controlling heaters for passenger compartments of automobiles, for controlling heaters for stoves or ovens; combination fluid control valve and temperature responsive control mechanism therefor, and combination temperature responsive mechanism for controlling automatic refrigerators, and electric timers for automatically effecting start of defrosting cycles; relays, controllers, regulators, electronic timers, electric igniters for fuel burners, electric switches, and valves operated by an electromagnet, gas and electric cooker controls, self clean oven controls, graduated switches, digital and analog timers, throttle position sensors, vacuum amplifiers, electronic governers and potentiometers, solid state relays and light dimmers, combination electric motor starting relay and temperature responsive overload controls for electric motors, motor speed controls; and renewable dials for chart recorders which monitor temperature and pressure namely charts; installations and apparatus for use as emergency and auxiliary electric power supply, all for operation by electric batteries .;
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