4. Liquid heaters and vaporizers
  5. Flue
  6. Horizontal

Donald E. Woollen

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High efficiency water heater

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

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Potable hot water storage vessel and direct-fired heat exchanger

Liquid heaters and vaporizers – Flue – Horizontal
Patent

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Profile ID: LFUS-PAI-P-1770828

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