Douglas Steege

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Madison, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Modular air-to-air heat exchanger
- Patent number 5,660,228
- Issue date Aug 26, 1997
- Altech Energy
- Douglas C. Steege
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Information Patent Application
Energy recovery ventilator
- Publication number 20050133204
- Publication date Jun 23, 2005
- RenewAire, LLC
- Charles Gates
- F24 - HEATING RANGES VENTILATING