4. Stoves and furnaces
  5. Stoves
  6. Heating

Tjernlund Products, Inc.

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Apparatus for exhausting combustion gases from a gas water heate

Combustion – Timer – programmer – retarder or condition responsive control – Of or by exhaust damper or exhaust pump
Patent

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Method and apparatus for centrally controlling environmental...

Automatic temperature and humidity regulation – Distance-adjusted
Reexamination Certificate

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Method and apparatus for centrally controlling environmental...

Automatic temperature and humidity regulation – Hot-air furnace – Air and fire control
Reexamination Certificate

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Power vent for hot flue gas

Stoves and furnaces – Stoves – Heating
Patent

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Thermostatically controlled power draft motor cooling system

Ventilation – Chimney or stack – Chimneytop or stacktop structure
Reexamination Certificate

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Profile ID: LFUS-PAI-P-42670

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