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Pilot gas bypass system for fuel-fired furnaces

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

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Plastic secondary heat exchanger apparatus for a high efficiency

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

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Pocket heat exchanger

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

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Portable blower heater/cooler apparatus

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

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Portable forced air heater

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

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Portable heat distribution system

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

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Portable hot air circulator

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

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Portable kerosene heater

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

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Portable LP space heater

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

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Portable space heater

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

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Portable space heater

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

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Power burner-fluid condensing mode furnace

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

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Power gas burner

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

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Pulse combustion apparatus

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

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Pulse combustion apparatus

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

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Pulse combustion apparatus

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

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Pulse combustion space heater

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

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Pulse combustion system for heating of air

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

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Pulse furnace

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

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Pulsing combustion

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

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