Heating apparatus and installations, stoves, fuel-powered and electric heating stoves, gas stoves, paraffin stoves, coal stoves, kerosene stoves, wood-burning stoves, cooking stoves, barbecues, kitchen ranges; heating boilers; boiler pipes tubes for heating installations; toasters; electric grills for cooking food and deep fat fryers, air heating ovens, furnaces, standard and ventilated fireplaces, domestic fireplaces, chimney blowers; heaters for baths, electric radiators; apparatus for vent...