Apparatus and method for detecting condition of a heating...

Apparatus for adjusting temperature variation value...

Apparatus for detecting a crack in a heater of an acid and rinse

Aquarium heater

Control and method for operating an electric water heater

Deicer covering system

Deicing system and method

Deicing system and method

Device for keeping a portion of a body of water free from ice

Drain plug heater

Electric element assembly

Electric heater assembly

Electric heater for a livestock water tank

Electric immersion heater with restricted heat-flow paths to the

Electrical heating element assembly for water heater

Electrical immersion heater with removable self-supporting carri

Electrically powered immersion heating elements and controls the

Electronic heater for an aquarium

Electronic immersion aquarium heater with spring biased NTC sens

Electronic thermostat for liquid heating apparatus