4. Heat exchange
  5. Structural installation
  6. Heating and cooling

William H. Hapgood

Inventor

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Burner control system

Combustion – Timer – programmer – retarder or condition responsive control – By combustion or combustion zone sensor
Patent

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Coiled heat exchanger

Heat exchange – Casing or tank enclosed conduit assembly – Manifold formed by casing section and tube sheet of assembly
Patent

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Multiport high density burner

Fluid sprinkling – spraying – and diffusing – Unitary plural outlet means – Arranged in plural groups or rows
Patent

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Self-pumping water boiler system

Heating systems – Automatic control – Combined radiator and boiler
Patent

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Self-pumping water boiler system

Heating systems – Combined radiator and boiler – Fluid fuel
Patent

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Profile ID: LFUS-PAI-P-124630

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