4. Stoves and furnaces
  5. Liquid heater

David L. Schardt

Inventor

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Heat exchanger

Environmental heating and cooling; fluid handling and sanitary e – Heating or cooling – Domestic water heater or boiler
Design Patent

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Heater for fluids

Stoves and furnaces – Liquid heater
Patent

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Induced draft heater with premixing burners

Combustion – Timer – programmer – retarder or condition responsive control
Patent

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Removable access panels for rooftop unit

Supports: cabinet structure – Outdoor type
Patent

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Sinusoidal fin heat exchanger

Heat exchange – Radiator core type – Side-by-side tubes traversing fin means
Reexamination Certificate

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Profile ID: LFUS-PAI-P-742560

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