Immersible PTC heating device
Immersion heater and method of manufacture
Immersion heater and support structure
Immersion heater device for aquariums and the like
Immersion heaters including sheet metal heat conduction link
Immersion heaters with heating elements in the form of printed c
Immersion heating element with conductive polymeric fitting
Immersion heating element with electric resistance heating mater
Immersion heating element with highly thermally conductive polym
Immersion type water heating element assembly with permanently w
Integral water heater and water temperature sensor
Integrated heater and controller assembly