4. Liquid heaters and vaporizers
  5. Safety devices
  6. Fire extinguishers

William T. Harrigill

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Burner flashback detection and system shutdown apparatus

Liquid heaters and vaporizers – Stand boiler – Fluid fuel burner
Reexamination Certificate

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Combustion air shutoff system for a fuel-fired heating appliance

Liquid heaters and vaporizers – Safety devices – Fire extinguishers
Patent

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Condensing furnace

Heat exchange – Conduit within – or conforming to – panel or wall structure – Opposed plates or shells
Patent

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Condensing furnace

Stoves and furnaces – Hot-air furnaces – Secondary heating chamber horizontally arranged
Patent

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Condensing furnace

Combustion – Fuel disperser installed in furnace – With discrete flame directing baffle
Patent

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Profile ID: LFUS-PAI-P-307868

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