Power vent water heater with electronic control system
Power vented water heater with air inlet
Power vented, fuel fired water heater with soft ignition system
Power-vented, direct-vent water heater
Premix furnace and methods of mixing air and fuel and...
Pressure balancing water heater dip tube turbulator attachment
Pressure cylinder
Pressure vessel wall non-threaded connection for water...
Primary heat exchanger design for condensing gas furnace
Procedure to increase the temperature in a closed circuit...
Process and a device for controlling the...
Process and apparatus for forming tubular thermoplastic film
Process and equipment for heating a liquid without pollution...
Process for introducing an insulating system in an interspace
Product design idea of theory basis
Programmable hot water thermostat control
Programmable thermostat to reduce bacterial proliferation to...
Programmable water heater thermostat controller
Proportional band temperature control for one or more...
Protective shield for baseboard heater