Pressure controllers for controlling the pressure of liquid, semi-liquid, and gaseous substances in industrial processes, namely, ignition apparatus and temperature controllers and flame controls and burner controls for heating devices, gas grills, gas cooking ovens

Gas apparatuses, in particular for burning and controlling gas, namely, gas powered heating devices, namely, space heaters containing both gas and infrared elements, space heaters and warm air heaters, gas grills, gas cooking ovens, gas burner frames for condensing boilers, and atmospheric gas burners for use in process heating and ovens; radiators containing both gas and infrared elements; electric and friction igniters for igniting gas burners and burners containing both gas and infrared elements; electric space heaters; electric overhead space heaters; electric cooking ovens; heating boilers; industrial dryers for process heat for textiles, drying paper, drying paint, defrosting airplanes, drying construction site materials, all with infrared burners; heat pumps; heat exchangers, other than parts of machines; heating installations, air-conditioning installations, heating installations, namely, electric overhead heaters; air curtains and air doors; ventilation installations and apparatus, namely, make-up air units and air handling units for cooling, heating and ventilating domestic and commercial buildings; air cooling towers and fans