Geofurnace Systems, Inc.

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Traverse City, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Defrost subcircuit for air-to-air heat pump
- Patent number 5,983,660
- Issue date Nov 16, 1999
- Geofurnace Systems, Inc.
- Thomas G. Kiessel
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Geothermal subcircuit for air conditioning unit
- Patent number 5,937,665
- Issue date Aug 17, 1999
- Geofurnace Systems, Inc.
- Thomas G. Kiessel
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Heat exchanger and heat pump circuit
- Patent number 5,875,644
- Issue date Mar 2, 1999
- Geofurnace Systems, Inc.
- Rex K. Ambs
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Geothermal heat exchanger and heat pump circuit
- Patent number 5,706,888
- Issue date Jan 13, 1998
- Geofurnace Systems, Inc.
- Rex K. Ambs
- F24 - HEATING RANGES VENTILATING

Patents Applicationslast 30 patents

Trademarklast 30 trademarks

Information Trademark
85225688 - GEOFURNACE
- Serial number 85225688
- Registration number 4012424
- Filing date Jan 25, 2011
- GeoFurnace Systems, Inc.
- 42 - Scientific and technological services and research and design relating thereto