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Forced air furnace motor lead wire protection

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Forced air furnace with liquid heat exchanger

Stoves and furnaces – Hot-air furnaces – Combined with boiler
Patent

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Forced air heater

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Forced air heater

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Forced air heater blower

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Forced air room heater for Franklin stove

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Forced air wood furnace system

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

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Franklin stove attachments

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Freeze resistant method for draining furnace condensate in...

Stoves and furnaces – Hot-air furnaces – Compressed air
Reexamination Certificate

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Fuel burning furnace

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Fuel burning furnace

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Fuel burning furnace

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Fuel burning furnace

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Fuel saving furnace improvement

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

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Fuel stoker and furnace

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Fuel stoker and furnace

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Fuel supply system for heater

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

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Fuel-fired condensing type forced air heating furnace

Stoves and furnaces – Hot-air furnaces – Compressed air
Patent

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Fuel-fired furnace with combustion air-cooled draft inducer...

Stoves and furnaces – Hot-air furnaces – Compressed air
Reexamination Certificate

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Fuel-fired furnace with self-cooling draft inducer fan

Stoves and furnaces – Hot-air furnaces – Compressed air
Reexamination Certificate

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