Electrical controllers for controlling electric fields in external combustion apparatuses; electrodes for applying electric fields in external combustion apparatuses; computer software that derives, optimizes, or generates waveforms for applying electric fields in external combustion apparatuses; Pollution control systems sold as a unit, comprised of electrostatic precipitators, electrostatic classifiers or electrostatic recyclers, used for reducing particulate emission in industrial applications; fuel control and metering devices, namely, flow meters coupled to electric field control panels

Voltage generators, electrodes and control units for applying electric fields within burners, boilers, and furnaces, all sold as integral structural parts for burners, namely, gas burners, coal burners, wood burners, fluidized beds, primary burners, and secondary burners, boilers, namely, boilers for furnaces, heating boilers, fixed boilers, boiler plants for ships and waste heat boilers, and furnaces