4. Stoves and furnaces
  5. Hot-air furnaces
  6. Compressed air
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Sawdust and wood chip burner

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

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Secondary heat exchanger for condensing furnace

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

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Sectional high efficiency heat exchanger

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

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Self-cleaning air filter system

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

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Serpentined tubular heat exchanger apparatus for a fuel-fired fo

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

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Space heater with novel fuel line assembly

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

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Standing pilot furnace with vented vestibule

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

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Standing pilot furnace with vented vestibule

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

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Stove arrangement

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

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Support for furnace heat exchanger

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

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