4. Stoves and furnaces
  5. Hot-air furnaces
  6. Preliminary air heater

John S. Cain

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Educational kit for teaching construction framing

Education and demonstration – Architecture – interior decoration – or industrial plant layout
Reexamination Certificate

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Heat recovery apparatus for use with a non-high efficiency furna

Stoves and furnaces – Hot-air furnaces – Preliminary air heater
Patent

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Profile ID: LFUS-PAI-P-140570

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