Floor-heating method and radiating pipe for use in floor heating

Flooring board with an embedded electrically influenced sheet

Flow controlled electrode type liquid heater

Flow heater

Fog-resisant mirror assembly

Fog-resistant mirror assembly

Fog-resistant mirror assembly

Fogless mirror for a bathroom shower and bathtub surround

Foldable household appliance

Food vending machine

Frame for holding heating elements of an electric heater of...

Frost control system for high-speed horizontal folding doors

Frost control system for high-speed mechanized doors

Frost plug heater

Frost plug immersion heater and improved clamping structure

Fuel filter jacket

Fuel heater system and self-regulating heater therefor

Fuel heating assembly

Fuel heating control method and system

Fuel heating system utilizing a liquid level responsive thermist