Hongsik Ahn

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Chesterfield, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Water vapor-condensing secondary heat exchanger
- Patent number 4,621,686
- Issue date Nov 11, 1986
- Intertherm, Inc.
- Hongsik Ahn
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Drain for condensate from flue gas
- Patent number 4,611,622
- Issue date Sep 16, 1986
- Intertherm Inc.
- Hongsik Ahn
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Furnace having water vapor-condensing secondary heat exchanger
- Patent number 4,478,206
- Issue date Oct 23, 1984
- Intertherm Inc.
- Hongsik Ahn
- F24 - HEATING RANGES VENTILATING