4. Stoves and furnaces
  5. Hot-air furnaces
  6. Liquid or gaseous fuel
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Heat exchanger

Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Patent

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Heater

Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Patent

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Heater and a method of controlling the combustion in such a heat

Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Patent

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Heater configured to operate with a first or second fuel

Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Reexamination Certificate

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Heating appliance

Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Patent

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Heating system

Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Patent

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High efficiency furnace with low polluting emissions

Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Patent

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High efficiency infrared radiant energy heating system and metho

Stoves and furnaces – Hot-air furnaces – Liquid or gaseous fuel
Patent

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