James E. Harrell

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Lafayette Hill, PA, US

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Patents Applicationslast 30 patents

Information Patent Application
Ground source heat pump field design with improved control strategies
- Publication number 20060101820
- Publication date May 18, 2006
- Geothermal Design Group, Inc.
- Albert A. Koenig
- F24 - HEATING RANGES VENTILATING
Information Patent Application
Geothermal systems with improved control strategies
- Publication number 20040206085
- Publication date Oct 21, 2004
- Albert A. Koenig
- F24 - HEATING RANGES VENTILATING